Comedian Iliza Shlesinger signs an autograph during 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)

Comedian Iliza Shlesinger and WWE Superstar "The Miz" meet 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 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)

Medal of Honor recipient retired Army Capt. Florent “Flo” Groberg speaks to soldiers and airmen from Atlantic Resolve Forces before the USO Holiday Tour in Powidz, Poland Dec. 26, 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)

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)

Country music artist Jerrod Niemann tours the aircraft carrier USS Theodore Roosevelt (CVN 71) during a visit to the ship as part of the USO Holiday Tour, 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)

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)

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 for soldiers from the 3rd and 4th Brigade 10th Mountain Division before the USO Holiday Tour at Qayyarah West, 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)

Marines assigned to Special Purpose Marine Air-Ground Task Force – Crisis Response – Africa meet with members of the USO Holiday Tour at Morón Air Base Dec. 21, 2017. Dunford and Troxell, along with USO entertainers, visited service members who are deployed from home during the holidays at various locations across the globe. 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 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)

A soldier holds up a sign for 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)

Country music artist Jerrod Niemann performs for soldiers and airmen from Atlantic Resolve Forces during the USO Holiday Tour in Powidz, Poland Dec. 26, 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)

Medal of Honor recipient retired Army Capt. Florent “Flo” Groberg, Actor Adam Devine, and Chef Robert Irvine meet with airmen assigned to the 380th Air Expeditionary Wing at Al Dhafra Air Base Dec. 22, 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 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 and actor Adam Devine performs during the chairman's Holiday Tour for service members 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)

An airmen assigned to the 380th Air Expeditionary Wing holds a sheet with autographs from entertainers from this year's USO Holiday Tour 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 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)

Sailors 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)

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)

Comedian Iliza Shlesinger rides in the back of a CH-47 Chinook Helicopter to move to Operating Base Fenty to meet with and perform a variety show with service members, 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)

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 chairman's Holiday Tour for service members at Advisory Post Lightning, 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)

Medal of Honor recipient retired Army Capt. Florent “Flo” Groberg places his medal on fire hose transformed into the American Flag during a troop engagement 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)

WWE Superstar Alicia Fox 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)

WWE Superstars “The Miz” and Alicia Fox perform for soldiers and airmen from Atlantic Resolve Forces during the USO Holiday Tour in Powidz, Poland Dec. 26, 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)

Soldiers await the start of 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)

A Sailor asks WWE Superstars “The Miz” and Alicia Fox a question 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)

Comedian Iliza Shlesinger performs during the chairma's Holiday Tour for service members 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)

Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman of the Joint Chiefs of Staff, and Medal of Honor recipient retired Army Capt. Florent “Flo” Groberg address sailors and Marines to kick off the start of the 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)

Members of the USO Holiday Tour attend an information brief at Advisory Post Lightning, 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 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)

Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman of the Joint Chiefs of Staff, speaks to soldiers and airmen from Atlantic Resolve Forces before the USO Holiday Tour in Powidz, Poland Dec. 26, 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 demonstrates proper baton striking technique during 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)

WWE Superstar “The Miz” signs an autograph for a service member at the base dining facility 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 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 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, Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman of the Joint Chiefs of Staff, and Medal of Honor recipient retired Army Capt. Florent “Flo” Groberg address sailors and Marines to kick off the start of the 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)

A member of U.S. Air Force demonstrates proper baton striking technique during 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)

Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, waits backstage before the start of the USO Holiday Tour at Morón Air Base Dec. 21, 2017. Dunford and Troxell, along with USO entertainers, visited service members who are deployed from home during the holidays at various locations across the globe. 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)

Comedian Iliza Shlesinger 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 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)

Chef Robert Irvine challenges a Marine while simultaneously performing a cooking demonstration 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 counts how many pushups WWE Superstar "The Miz" does as part of a cooking challenge against Chef Robert Irvine during the chairman's Holiday Tour for service members 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 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 Iliza Shlesinger gives a thumbs up after visiting the aircraft carrier USS Theodore Roosevelt (CVN 71) during a visit to the ship as part of the USO Holiday Tour, 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)

Chef Robert Irvine performs a cooking demonstration 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)

Actor Adam Devine and WWE Superstar Alicia Foxx dance while 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)