Members of the Chairman’s USO Holiday Tour sing Winter Wonderland during a performance at Al Dhafra Air Base Dec. 22, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Wrestler Gail Kim chokes out Actor Adam Devine while WWE Superstar "The Miz" officiates during Chef Robert Irvine's cooking demonstration as part of the Chairman’s USO Holiday Tour at Morón Air Base Dec. 21, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

The Chairman’s USO Holiday Tour walks out on stage following the conclusion of the first show at Morón Air Base Dec. 21, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, speaks to U.S. service members in Powidz, Poland, Dec. 26, 2017. Dunford and Troxell, along with USO entertainers, visited service members in five countries who are deployed during the holidays. This year’s entertainers are Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

WWE Superstars “The Miz” and Alicia Fox answer questions during Chairman’s USO Holiday Tour at Morón Air Base Dec. 21, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman of the Joint Chiefs of Staff, along with USO entertainers, visited service members who are deployed from home during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Comedian Iliza Shlesinger performs during Chairman’s USO Holiday Tour at Morón Air Base Dec. 21, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Comedian Iliza Shlesinger performs during Chairman’s USO Holiday Tour at Morón Air Base Dec. 21, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Sailors watch actor Adam Devine perform during Chairman’s USO Holiday Tour aboard the aircraft carrier USS Theodore Roosevelt (CVN 71) Dec. 23, 2017. Dunford and Troxell, along with USO entertainers, visited service members who are deployed during the holidays. This year’s entertainers are Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

WWE Superstars “The Miz” and Alicia Fox answer questions during Chairman’s USO Holiday Tour at Morón Air Base Dec. 21, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman of the Joint Chiefs of Staff, along with USO entertainers, visited service members who are deployed from home during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Country music artist Jerrod Niemann performs during Chairman’s USO Holiday Tour at Morón Air Base Dec. 21, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Country music artist Jerrod Niemann performs during Chairman’s USO Holiday Tour at Morón Air Base Dec. 21, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Soldiers eat Georgetown Cupcakes before the start of the chairman's USO Holiday Tour at Operating Base Fenty, Dec. 24, 2017. Dunford and Troxell, along with USO entertainers, visited service members who are deployed during the holidays. This year’s entertainers are Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

A member of U.S. Air Force prepares for a non-lethal weapons training and self-defense demonstration for members of the Chairman’s USO Holiday Tour at Morón Air Base Dec. 21, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman of the Joint Chiefs of Staff, along with USO entertainers, visited service members who are deployed from home during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Comedian Iliza Shlesinger performs during Chairman’s USO Holiday Tour at Morón Air Base Dec. 21, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Medal of Honor recipient retired Army Capt. Florent “Flo” Groberg pays tribute to those who were killed in action at th Fenty Memorial while visiting Operating Base Fenty with the chairman's USO Holiday Tour, Dec. 24, 2017. After medically retiring as a captain, Groberg returned as a symbol of bravery and resiliency for the soldiers of this base. Now, Groberg wears the Medal of Honor around his neck for his actions in nearby Asadabad on Aug. 8, 2012, when he was severely injured attempting to stop an attack on his patrol by suicide bombers. Dunford and Troxell, along with USO entertainers, visited service members who are deployed during the holidays. This year’s entertainers are Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

WWE Superstars “The Miz” and Alicia Fox answer questions during Chairman’s USO Holiday Tour at Morón Air Base Dec. 21, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman of the Joint Chiefs of Staff, along with USO entertainers, visited service members who are deployed from home during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

An airman takes a selfie with WWE Superstar “The Miz” during the chairman's Holiday Tour for service members at Bagram Airfield, Dec. 24, 2017. Dunford and Troxell, along with USO entertainers, visited service members who are deployed during the holidays. This year’s entertainers are Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

A sailor holds up a photo of actor Adam Devine while he performs during Chairman’s USO Holiday Tour aboard the aircraft carrier USS Theodore Roosevelt (CVN 71) Dec. 23, 2017. Dunford and Troxell, along with USO entertainers, visited service members who are deployed during the holidays. This year’s entertainers are Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Comedian and actor Adam Devine participates in a non-lethal weapons training and self-defense demonstration with U.S. Air Force Security Forces as part of a troop engagement during the Chairman’s USO Holiday Tour at Morón Air Base Dec. 21, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman of the Joint Chiefs of Staff, along with USO entertainers, visited service members who are deployed from home during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Comedian and actor Adam Devine performs during Chairman’s USO Holiday Tour at Morón Air Base Dec. 21, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman of the Joint Chiefs of Staff, along with USO entertainers, visited service members who are deployed from home during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Comedian Iliza Shlesinger performs during Chairman’s USO Holiday Tour at Morón Air Base Dec. 21, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Country music artist Jerrod Niemann performs during Chairman’s USO Holiday Tour at Morón Air Base Dec. 21, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

WWE Superstar Alicia Fox participates in a non-lethal weapons training and self-defense demonstration with U.S. Air Force Security Forces as part of a troop engagement during the Chairman’s USO Holiday Tour at Morón Air Base Dec. 21, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman of the Joint Chiefs of Staff, along with USO entertainers, visited service members who are deployed from home during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

An army aircrewman moves through the cabin aboard a CH-47 Chinook Helicopter before flying to Operating Base Fenty, Dec. 24, 2017. Dunford and Troxell, along with USO entertainers, visited service members who are deployed during the holidays. This year’s entertainers are Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

WWE Superstars “The Miz” and Alicia Fox answer questions from the audience during the Chairman’s USO Holiday Tour at Al Dhafra Air Base Dec. 22, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

WWE Superstars “The Miz” and Alicia Fox answer questions from the audience during the Chairman’s USO Holiday Tour at Al Dhafra Air Base Dec. 22, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

WWE Superstar Alicia Fox speaks departs the base dining facility before the USO Holiday Tour at Taji Military Complex, Dec. 25, 2017. Dunford and Troxell, along with USO entertainers, visited service members who are deployed during the holidays. This year’s entertainers are Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Aviation ordnancemen greet Adam Devine following the Chairman’s USO Holiday Tour aboard the aircraft carrier USS Theodore Roosevelt (CVN 71) Dec. 23, 2017. Dunford and Troxell, along with USO entertainers, visited service members who are deployed during the holidays. This year’s entertainers are Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, meet with airmen assigned to the 380th Air Expeditionary Wing at Al Dhafra Air Base Dec. 23, 2017. Dunford and Troxell, along with USO entertainers, visited service members who are deployed during the holidays. This year’s entertainers are Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Country music artist Jerrod Niemann autographs a guitar following a performance during the Chairman’s USO Holiday Tour at Al Dhafra Air Base Dec. 22, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

WWE Superstars “The Miz” and Alicia Fox answer questions from the audience during the Chairman’s USO Holiday Tour at Al Dhafra Air Base Dec. 22, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Comedian and actor Adam Devine meets with Marines assigned to Special Purpose Marine Air-Ground Task Force – Crisis Response – Africa as part of a troop engagement during the Chairman’s USO Holiday Tour at Morón Air Base Dec. 21, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman of the Joint Chiefs of Staff, along with USO entertainers, visited service members who are deployed from home during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Country music artist Jerrod Niemann performs during Chairman’s USO Holiday Tour at Morón Air Base Dec. 21, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Country music artist Jerrod Niemann meets with airmen assigned to the 380th Air Expeditionary Wing at Al Dhafra Air Base Dec. 23, 2017. Dunford and Troxell, along with USO entertainers, visited service members who are deployed during the holidays. This year’s entertainers are Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Comedian Iliza Shlesinger performs during Chairman’s USO Holiday Tour at Al Dhafra Air Base Dec. 22, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Actor Adam Devine, WWE Superstar "The Miz," and country music artist Jerrod Niemann talk backstage during the Chairman’s USO Holiday Tour at Al Dhafra Air Base Dec. 22, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, departs the aircraft carrier USS Theodore Roosevelt (CVN 71) Dec. 23, 2017. Dunford and Troxell, along with USO entertainers, visited service members who are deployed during the holidays. This year’s entertainers are Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Country music artist Jerrod Niemann performs during Chairman’s USO Holiday Tour at Al Dhafra Air Base Dec. 22, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Country music artist Jerrod Niemann performs during Chairman’s USO Holiday Tour at Morón Air Base Dec. 21, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Country music artist Jerrod Niemann brings soldiers on stage to hold the American Flag during the chairman's Holiday Tour for service members at Bagram Airfield, Dec. 24, 2017. Dunford and Troxell, along with USO entertainers, visited service members who are deployed during the holidays. This year’s entertainers are Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Country music artist Jerrod Niemann performs during Chairman’s USO Holiday Tour at Al Dhafra Air Base Dec. 22, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Comedian and actor Adam Devine meets with Marines assigned to Special Purpose Marine Air-Ground Task Force – Crisis Response – Africa as part of a troop engagement during the Chairman’s USO Holiday Tour at Morón Air Base Dec. 21, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman of the Joint Chiefs of Staff, along with USO entertainers, visited service members who are deployed from home during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Comedian Iliza Shlesinger performs during the USO Holiday Tour for service members at Bagram Airfield, Dec. 24, 2017. Dunford and Troxell, along with USO entertainers, visited service members who are deployed during the holidays. This year’s entertainers are Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Actor Adam Devine, wrestler Gail Kim, comedian Iliza Shlesinger, and Chef Robert Irvine meet with airmen assigned to the 380th Air Expeditionary Wing at Al Dhafra Air Base Dec. 23, 2017. Dunford and Troxell, along with USO entertainers, visited service members who are deployed during the holidays. This year’s entertainers are Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Comedian and actor Adam Devine performs during Chairman’s USO Holiday Tour at Al Dhafra Air Base Dec. 22, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Wrestler Gail Kim and Chef Robert Irvine perform during Chairman’s USO Holiday Tour aboard the aircraft carrier USS Theodore Roosevelt (CVN 71) Dec. 23, 2017. Dunford and Troxell, along with USO entertainers, visited service members who are deployed during the holidays. This year’s entertainers are Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

USO volunteers watch the USO Holiday Tour at Bagram Airfield, Dec. 24, 2017. Dunford and Troxell, along with USO entertainers, visited service members who are deployed during the holidays. This year’s entertainers are Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

WWE Superstars “The Miz” and Alicia Fox perform during the Chairman’s USO Holiday Tour at Al Dhafra Air Base Dec. 22, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

Comedian Iliza Shlesinger performs during Chairman’s USO Holiday Tour at Al Dhafra Air Base Dec. 22, 2017. Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, along with USO entertainers, visited service members who are deployed during the holidays at various locations across Europe and the Middle East. This year’s entertainers were Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)

WWE Superstar "the Miz," Chef Robert Irvine, and comedian Adam Devine arrive at Operating Base Fenty, Dec. 24, 2017. Dunford and Troxell, along with USO entertainers, visited service members who are deployed during the holidays. This year’s entertainers are Chef Robert Irvine, wrestler Gail Kim, comedian Iliza Shlesinger, actor Adam Devine, country musician Jerrod Niemann, and WWE Superstars “The Miz” and Alicia Fox. (DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro/Released)