Local Czech Republic residents wave as they cheer on Troopers assigned to 4th Squadron, 2nd Cavalry Regiment, while watching them participate in Dragoon Crossing, a tactical road march starting out at Rose Barracks, Germany and continuing through the Czech Republic and the Slovak Republic ending in Hungary on Sept. 13, 2015. The purpose of the exercise is to reassure NATO Allies of the U.S. intent during Operation Atlantic Resolve while demonstrating interoperability and freedom of movement throughout Eastern Europe. (U.S. Army photo by Sgt. William A. Tanner/released)

Soldiers of the Hungarian Defense Forces stood watch as Troopers assigned to 4th Squadron, 2nd Cavalry Regiment, conducted a deliberate water crossing in their M1126 Stryker Combat Vehicles using a bypass bridging site during Dragoon Crossing, a tactical road march starting out at Rose Barracks, Germany and continuing through the Czech Republic and the Slovak Republic ending in Hungary on Sept. 17, 2015. The purpose of the exercise is to reassure NATO Allies of the U.S. intent during Operation Atlantic Resolve while demonstrating interoperability and freedom of movement throughout Eastern Europe. (U.S. Army photo by Sgt. William A. Tanner/released)

Military personnel and delegates from more than 40 nations establish communications centers to begin the scenario portion of the Africa Endeavor 2013 exercise at an Air Force base in Lusaka, Zambia, Aug. 10, 2013.Africa Endeavor is Africa Command's annual 10-day communications exercise, focusing on interoperability and information sharing among African partners. The first Africa Endeavor was held in 2006 in South Africa; past exercises have taken place in Nigeria, Gabon, Ghana, The Gambia and Cameroon. (U.S. Army National Guard photo by Sgt. Bethany Fehringer/RELEASED)

U.S. Army Brig. Gen. Christopher G. Cavoli, commander of the 7th Army Joint Multinational Training Command (JMTC), answers questions during a press conference for Exercise Allied Spirit IV at the 7th Army Joint Multinational Training Command's Hohenfels Training Area, Germany, Jan. 27, 2016. Exercise Allied Spirit includes more than 2,400 participants from seven NATO nations, and exercises tactical interoperability and tests secure communications within Alliance members and partner nations. (U.S. Army photo by Visual Information Specialist Gertrud Zach/released)

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CLARK AIR BASE, Philippines – U.S. Marine pilots conduct familiarization flights over various locations in the Philippines April 5 in preparation for operations during exercise Balikatan 2013. Throughout the exercise Marine Medium Tiltrotor Squadron 265, and other elements of 1st Marine Aircraft Wing will conduct various flight operations with the Armed Forces of the Philippines. The exercise, in its 29th iteration, is an annual bilateral training evolution aimed at ensuring interoperability of the Philippine and U.S. militaries during planning, contingency and humanitarian assistance operations. (U.S. Marine Corps photo by 1st Lt. Breck Archer/Released)

Staff Sgt. Levi Prewitt of Company A, 3rd Battalion, 8th Cavalry Regiment, 3rd Armored Brigade Combat Team, 1st Cavalry Division pounds pickets to secure a target while Capt. Colby Burkhart, commander of Co. A, 3-8 CAV, hold it in place prior to a combined, joint live-fire accuracy screening test range May 10 in Wadi Shadiya, Jordan during Exercise Eager Lion 2017. Eager Lion was a two-weeklong multinational exercise with the Hashemite Kingdom of Jordan, in order to exchange military expertise and improve interoperability among partner nations. (U.S. Army photo by Staff Sgt. Leah R. Kilpatrick, 3rd Armored Brigade Combat Team Public Affairs Office, 1st Cavalry Division (released)

Maintenance Soldiers Pfc. Trevor Crocket, left, and Staff Sgt. Marcus D. Young of 2nd Cavalry Regiment, U.S.Army Europe, stretch concertina wire across an entry control point Jan. 24 in Allied Spirit IV a multinational interoperability exercise at the U.S. Army’s Joint Multinational Readiness Center in Hohenfels Training Area (JMRC HTA), Germany. (U.S. Army National Guard photo by Staff Sgt. Eddie Siguenza)

Maintainers with Marine All-Weather Fighter Attack Squadron (VMFA) 224 prepare F/A-18D Hornets to take off at Chitose Air Base in Hokkaido, Japan, Jan. 14, 2016. VMFA (AW)-224, homebased at MCAS Beaufort, S.C., is temporarily based in Iwakuni on a unit deployment program and deployed to Northern Japan to participate in the Chitose Aviation Training Relocation Exercise Jan. 12-22. During the exercise, the squadron conducted dissimilar air combat training with and against the Japan Air Self-Defense Force to further support combined interoperability and Pacific theater security cooperation. (U.S. Marine Corps photo by Cpl. Jessica

170805-N-KB401-276 ATLANTIC OCEAN (Aug. 5, 2017) The Nimitz-class aircraft carrier USS George H.W. Bush (CVN 77) sails through the Atlantic Ocean during exercise Saxon Warrior 2017, Aug. 5. Saxon Warrior is a United States and United Kingdom co- hosted carrier strike group exercise that demonstrates interoperability and capability to respond to crises and deter potential threats. (U.S. Navy photo by Mass Communication Specialist 2nd Class Michael B. Zingaro/Released)

ITU session on ICTs and Conformance & Interoperability (C&I)

©ITU/E.Skvortsova

Visitors from various nations attend an introductory briefing during the 7th Army Joint Multinational Training Command's Distinguished Visitors Day for Exercise Allied Spirit IV at Hohenfels Training Area, Germany, Jan. 27, 2016. The Allied Spirit IV Exercise focuses on unified land operations and enhancing fires interoperability and integration of NATO Allies. (U.S. Army photo by Visual Information Specialist Gertrud Zach/releasesd)

Staff Sgt. Levi Prewitt of Company A, 3rd Battalion, 8th Cavalry Regiment, 3rd Armored Brigade Combat Team, 1st Cavalry Division uses a sledgehammer to pound a picket to secure a target in place prior to a combined, joint live-fire accuracy screening test range May 10 in Wadi Shadiya, Jordan during Exercise Eager Lion 2017. Eager Lion was a two-weeklong multinational exercise with the Hashemite Kingdom of Jordan, in order to exchange military expertise and improve interoperability among partner nations. (U.S. Army photo by Staff Sgt. Leah R. Kilpatrick, 3rd Armored Brigade Combat Team Public Affairs Office, 1st Cavalry Division (released)

McEntire Joint National Guard Base, home of the South Carolina Air National Guard’s 169th Fighter Wing, co-hosts nighttime arming and refueling training during Exercise Agile Lion, Jan. 14, 2020. Multi-functional Airmen and F-15E Strike Eagle fighter jets from the 4th Fighter Wing at Seymour Johnson Air Force Base, N.C., execute integrated combat turns during the exercise. This training simulates mobile command and control which enables joint interoperability. (U.S. Air Force photo by Capt. Stephen Hudson, 169th Fighter Wing Public Affairs)

Troopers assigned to 4th Squadron, 2nd Cavalry Regiment, begin to stage their vehicles and equipment as the prepare to conduct preventive maintenance, checks and services before driving the second leg of the Dragoon Crossing, a tactical road march starting out at Rose Barracks, Germany and continuing through the Czech Republic and the Slovak Republic ending in Hungary on Sept. 14, 2015. The purpose of the exercise is to reassure NATO Allies of the U.S. intent during Operation Atlantic Resolve while demonstrating interoperability and freedom of movement throughout Eastern Europe. (U.S. Army photo by Sgt. William A. Tanner/released)

Visitors from various nations observe a training exercise during the 7th Army Joint Multinational Training Command's Distinguished Visitors Day for Exercise Allied Spirit IV at Hohenfels Training Area, Germany, Jan. 27, 2016. The Allied Spirit IV Exercise focuses on unified land operations and enhancing fires interoperability and integration of NATO Allies. (U.S. Army photo by Visual Information Specialist Gertrud Zach/releasesd)

Visitors from various nations visit the 4th Battalion, 319th Airborne Field Artillery Regiment, 173rd Airborne Brigade’s technical operations center during the 7th Army Joint Multinational Training Command's Distinguished Visitors Day for Exercise Allied Spirit IV at Hohenfels Training Area, Germany, Jan. 27, 2016. The Allied Spirit IV Exercise focuses on unified land operations and enhancing fires interoperability and integration of NATO Allies. (U.S. Army photo by Visual Information Specialist Gertrud Zach/releasesd)

1st Lt. Jacob Barrett, a scout platoon leader assigned to 2nd Squadron, 2nd Cavalry Regiment, briefs the reconnaissance portion of an operation order during the unit's rehearsal of concept drill, held in preparation of the unit's support for Operation Atlantic Resolve in Mihail Kogalniceanu, Romania, Mar. 23, 2015. The purpose of the Operation Atlantic Resolve is to conduct multinational training as well as improving allied interoperability between U.S. and NATO forces. (U.S. Army photo by Sgt. William A. Tanner/released)

McEntire Joint National Guard Base, home of the South Carolina Air National Guard’s 169th Fighter Wing, co-hosts nighttime arming and refueling training during Exercise Agile Lion, Jan. 14, 2020. Multi-functional Airmen and F-15E Strike Eagle fighter jets from the 4th Fighter Wing at Seymour Johnson Air Force Base, N.C., execute integrated combat turns during the exercise. This training simulates mobile command and control which enables joint interoperability. (U.S. Air Force photo by Capt. Stephen Hudson, 169th Fighter Wing Public Affairs)

Stryker Combat Vehicles (top three,) belonging to 2nd Squadron 2nd Cavalry Regiment, conduct tactical maneuvers and operations in conjunction with Romanian TR-85 Main Battle Tanks (bottom three,) while participating in a multinational combined arms demonstration during an Exercise Wind Spring Distinguished Visitor's event at Smardan Training Area, Romania, Apr. 18, 2015. The purpose of the event was to demonstrate interoperability between NATO Allies, while also allowing members of the Romanian government, along with British military leadership, to watch as the units worked and trained together in support of Operation Atlantic Resolve-South. (U.S. Army photo by Sgt. William A. Tanner/released)

Two Troopers (left and right,) assigned to 2nd Squadron, 2nd Cavalry Regiment, talk with a British soldier (middle,) belonging to the ColdstreamGuard, as both units along with Romanian Land Forces, prepare for a multinational combined arms demonstration during an Exercise Wind Spring Distinguished Visitor's event at Smardan Training Area, Romania, Apr. 18, 2015. The purpose of the event was to demonstrate interoperability between NATO Allies, while also allowing members of the Romanian government, along with British military leadership, to watch as the units worked and trained together in support of Operation Atlantic Resolve-South. (U.S. Army photo by Sgt. William A. Tanner/released)

McEntire Joint National Guard Base, home of the South Carolina Air National Guard’s 169th Fighter Wing, co-hosts nighttime arming and refueling training during Exercise Agile Lion, Jan. 14, 2020. Multi-functional Airmen and F-15E Strike Eagle fighter jets from the 4th Fighter Wing at Seymour Johnson Air Force Base, N.C., execute integrated combat turns during the exercise. This training simulates mobile command and control which enables joint interoperability. A C-130J Hercules military transport aircraft from the 19th Airlift Wing, Little Rock Air Force Base, Ark., assists in the prepositioning of support personnel, equipment and fuel needed to support the fleet of F-15s participating in the exercise. (U.S. Air Force photo by Senior Master Sgt. Edward Snyder, 169th Fighter Wing Public Affairs)

Paratroopers from the 3rd Battalion, Royal Canadian Regiment, attend T-11 parachute training at the Advanced Airborne School on Fort Bragg, N.C., Oct. 19, 2015. Last week, the 3RCR began to arrive on Fort Bragg to participate in the 82nd Airborne Division's Combined Joint Operational Access Exercise 16-01, beginning later this month. The 82nd Abn. Div. is leading a multinational effort to develop an interoperability program with other nations' airborne forces, often their most elite and highly trained military units, to operate together quickly and effectively in future operations. (82nd Airborne Division photo by Staff Sgt. Jason Hull)

A Marine assigned to 3rd Battalion, 6th Marines runs toward an objective at a squad live-fire May 11 in Wadi Shadiya, Jordan as part of Exercise Eager Lion 2017. Eager Lion was a two-weeklong multinational exercise with the Hashemite Kingdom of Jordan, in order to exchange military expertise and improve interoperability among partner nations. (U.S. Army photo by Staff Sgt. Leah R. Kilpatrick, 3rd Armored Brigade Combat Team Public Affairs Office, 1st Cavalry Division (released)

2nd Lt. Jacob W. Casserino, a medical officer assigned to 2nd Squadron, 2nd Cavalry Regiment, briefs the medical portion of an operation order during the unit's rehearsal of concept drill, held in preparation of the unit's support for Operation Atlantic Resolve in Mihail Kogalniceanu, Romania, Mar. 23, 2015. The purpose of the Operation Atlantic Resolve is to conduct multinational training as well as improving allied interoperability between U.S. and NATO forces. (U.S. Army photo by Sgt. William A. Tanner/released)

Capt. Michael Farinelli, Fox Troop commander assigned to 2nd Squadron, 2nd Cavalry Regiment, walks along a makeshift route while briefing his troop's movement during the unit's rehearsal of concept drill, held in preparation of the unit's support for Operation Atlantic Resolve in Mihail Kogalniceanu, Romania, Mar. 23, 2015. The purpose of the Operation Atlantic Resolve is to conduct multinational training as well as improving allied interoperability between U.S. and NATO forces. (U.S. Army photo by Sgt. William A. Tanner/released)

MUANG KOM, Kingdom of Thailand –U.S. Marine Lance Cpl. Gustavo Reyes, squad automatic weapon gunner with Company A, 1st Battalion, 4th Marine Regiment, 31st Marine Expeditionary Unit, operates a M249 SAW during the bilateral combined arms live fire exercise Feb. 15 during Exercise Cobra Gold 2012. The training provided the opportunity for the Royal Thai and U.S. to implement techniques and procedures learned throughout the week including maneuvering under fire, conducting small arms, artillery and machine gun fire. Cobra Gold is an annual Thai and U.S. co-hosted multinational exercise designed to advance security throughout the Asia-Pacific region and increase interoperability with participating nations. (U.S. Marine Corps photo by Lance Cpl. Ronald K. Peacock/Released)

Kronos Troop, 3rd Squadron, 2d Cavalry Regiment executes a Troop air assault exercise in Norio, Georgia, Aug. 8, 2018. 3/2CR is currently supporting Noble Partner 18 - a Georgian Armed Forces and U.S. Army Europe cooperatively-led exercise in its fourth iteration. The exercise is intended to support and enhance the readiness and interoperability of Georgia, the U.S. and participating nations during a multinational training operation. (U.S. Army photos by 1st Lt. Ellen C. Brabo, 2d Cavalry Regiment)

Visitors from various nations visit the 4th Battalion, 319th Airborne Field Artillery Regiment, 173rd Airborne Brigade’s technical operations center during the 7th Army Joint Multinational Training Command's Distinguished Visitors Day for Exercise Allied Spirit IV at Hohenfels Training Area, Germany, Jan. 27, 2016. The Allied Spirit IV Exercise focuses on unified land operations and enhancing fires interoperability and integration of NATO Allies. (U.S. Army photo by Visual Information Specialist Gertrud Zach/releasesd)

Gen. Vincent K. Brooks, United Nations Commander, Combined Forces Commander, and United States Forces Korea commander; and Gen. Leem Ho Young, Combined Forces Command deputy commander, welcome Pacific Amphibious Leaders Symposium (PALS) participants to South Korea, Mar. 17, 2017. PALS brings together senior leaders of allied and partner nations throughout the Indo-Asia-Pacific region to focus on maritime/amphibious operations interoperability. PALS 2017 is being hosted by the ROK Marine Corps, and is the first iteration to be hosted outside of the United States. U.S. Army photo by SFC Sean K. Harp

Gen. Vincent K. Brooks, United Nations Commander, Combined Forces Commander, and United States Forces Korea commander; Gen. Leem Ho Young, Combined Forces Command deputy commander; and Gen. Lee Sun-jin, Gen. Lee, Sun-Jin, Chairman of the Republic of Korea Joint Chiefs of Staff, attended the Pacific Amphibious Leaders Symposium (PALS) welcome dinner in Seongnam, South Korea, Apr. 1, 2017. PALS brings together senior leaders of allied and partner nations throughout the Indo-Asia-Pacific region to focus on maritime/amphibious operations interoperability. PALS 2017 is being hosted by the ROK Marine Corps, and is the first iteration to be hosted outside of the United States. U.S. Army photo by SFC Sean K. Harp

Canadian army Cpl. Dave Bergeron and Pvt. Danny Gagne, use the Multilateral Interoperability Program to transmit information between nations during Combined Endeavor in Grafenwoehr, Germany, Sept. 19, 2011. Combined Endeavor is a U.S. European Command-sponsored, multinational initiative intended to encourage interoperability and information exchange among nations via communications networks and subsequent collaborative links with the United States with common stability, security and sustainment goals, and objectives. (U.S. Air Force photo by Senior Airman Adawn Kelsey/Released)

McEntire Joint National Guard Base, home of the South Carolina Air National Guard’s 169th Fighter Wing, co-hosts nighttime arming and refueling training during Exercise Agile Lion, Jan. 14, 2020. Multi-functional Airmen and F-15E Strike Eagle fighter jets from the 4th Fighter Wing at Seymour Johnson Air Force Base, N.C., execute integrated combat turns during the exercise. This training simulates mobile command and control which enables joint interoperability. A C-130J Hercules military transport aircraft from the 19th Airlift Wing, Little Rock Air Force Base, Ark., assists in the prepositioning of support personnel, equipment and fuel needed to support the fleet of F-15s participating in the exercise. (U.S. Air Force photo by Senior Master Sgt. Edward Snyder, 169th Fighter Wing Public Affairs)

Soldiers from Company E, 2d Battalion, 20th Special Forces Group, 1st Special Forces Regiment, Mississippi Army National Guard, prepare for sling load operations with a CH-47 Chinook helicopter assigned to Company B, 1st Battalion, 111th Aviation Regiment, Mississippi Army National Guard, during Southern Strike 2023 at Camp Shelby Joint Forces Training Center, April 20, 2023. Southern Strike 2023 promotes interoperability between special forces, conventional ground forces, and air assets in order to ensure the U.S. military stays relevant and ready to respond to a peer-to-peer, large-scale combat operation. (U.S. Army National Guard photo by Sgt. Taylor Cleveland)

ROCKHAMPTON, Queensland (July 13, 2011) U.S. Marines with Weapons Company, 2nd Battalion, 7th Marine Regiment, 31st Marine Expeditionary Unit, III Marine Expeditionary Force, based in Okinawa, Japan, conduct a weapons drill with Australian Defence Force Craftsman Carl Norling, left, and Pvts. James Newton, middle, and Peter Noble, right, all with 6th Aviation Regiment, on Camp Rocky in Rockhampton during Talisman Saber 2011. TS11 is a biennial combined training activity, designed to train Australian and U.S. forces in planning and conducting Combined Task Force operations to improve Australian Defense Force/U.S. combat readiness and interoperability. It reflects the closeness of the alliance and the strength and flexibility of the ongoing military-military relationship. (U.S. Marine Corps photo by Lance Cpl. Jerome Reed/Released)

McEntire Joint National Guard Base, home of the South Carolina Air National Guard’s 169th Fighter Wing, co-hosts nighttime arming and refueling training during Exercise Agile Lion, Jan. 14, 2020. Multi-functional Airmen and F-15E Strike Eagle fighter jets from the 4th Fighter Wing at Seymour Johnson Air Force Base, N.C., execute integrated combat turns during the exercise. This training simulates mobile command and control which enables joint interoperability. (U.S. Air Force photo by Capt. Stephen Hudson, 169th Fighter Wing Public Affairs)

170807-N-ME396-029 THE MINCH, Scotland (Aug. 7, 2017)The Nimitz-class aircraft carrier USS George H.W. Bush (CVN 77) and its escort ships transit the Minch, Scotland, during exercise Saxon Warrior 2017, Aug. 7. Saxon Warrior is a United States and United Kingdom co- hosted carrier strike group exercise that demonstrates interoperability and capability to respond to crises and deter potential threats. (U.S. Navy photo by Mass Communication Specialist 3rd Class Tristan B. Lotz/Released)

ITU HQ, Geneva, Switzerland, 2 August 2019

© ITU/E.Skvortsova

Slovenian soldiers of 3rd Company, 10th Regiment react to contact during a situational training exercise lane at Exercise Allied Spirit IV at the 7th Army Joint Multinational Training Command's Hohenfels Training Area, Germany, Jan. 25, 2016. Exercise Allied Spirit includes more than 2,400 participants from seven NATO nations, and exercises tactical interoperability and tests secure communications within alliance members and partner nations. (U.S. Army photo by Visual Information Specialist Gertrud Zach/released)

170807-N-KB401-275 THE MINCH, Scotland (Aug. 7, 2017) An MH-60S Sea Hawk, attached to the "Tridents" of Helicopter Sea Combat Squadron (HSC) 9, patrols while the Nimitz-class aircraft carrier USS George H.W. Bush (CVN 77) transits the Minch, Scotland, during exercise Saxon Warrior 2017, Aug. 7. Saxon Warrior is a United States and United Kingdom co-hosted carrier strike group exercise that demonstrates interoperability and capability to respond to crises and deter potential threats. (U.S. Navy photo by Mass Communication Specialist 2nd Class Michael B. Zingaro/Released)

U.S. Marines with Marine Medium Tiltrotor Squadron 265 (Rein), 31st Marine Expeditionary Unit, fire 20 millimeter rounds at a ground target while participating in a close air support mission during exercise Ssang Yong 2014 on April 1, 2014. Exercise Ssang Yong is conducted annually in the Republic of Korea (ROK) to enhance the interoperability of U.S. and ROK forces by performing a full spectrum of amphibious operations while showcasing sea-based power projection in the Pacific. (U.S. Marine Corps Photo by Lance Cpl. Katelyn Hunter/Released).

Estonian Army Cpl. Albert Benedik of Rakvere, and assigned to the Estonia Scout Battalion, provides security during an STX (simulated training exercise) lane at Hohenfels Training Area Aug. 27. Saber Junction 14 is a large-scale, joint, multinational, annual military exercise, involving hundreds of aircraft and vehicles and thousands of personnel from 16 different nations. The exercise will prepare brigade-level units for worldwide contingency operations. The exercise further focuses U.S., NATO, and partner forces on concepts such as decisive and sustainable land operations through the simultaneous combination of offensive, defensive and stability operations and on interoperability with partnered nations. More information about Saber Junction 2014 can be found at www.eur.army.mil/SaberJunction/ (U.S. Army photo by Sgt. Christina M. Dion/Released)

A-10C Thunderbolt II’s assigned to the 104th Fighter Squadron sit on the flightline after a training mission preparing for the start of Saber Strike at Amari Air Base, Estonia on June 2, 2013. The Maryland Air National Guard pilots will provide training and mentoring to the Estonian Air Force with their close air support aircraft. Saber Strike 2013 is a multinational exercise involving approximately 2,000 personnel from 14 countries and is designed to improve NATO interoperability and strengthen the relationships between military forces of the U.S., Estonia and other participating nations (U.S. Air National Guard photo by Capt. Joseph Winter)

An engineer noncommissioned officer from 10th Special Forces Group prepares a shape charge during Battle Group Poland’s live demolition training during Saber Strike 17 near Bemowo Piskie Training Area June 6. Saber Strike 17 is a U.S. Army Europe-led multinational combined forces exercise conducted annually to enhance the NATO alliance throughout the Baltic region and Poland. This year’s exercise includes integrated and synchronized deterrence-oriented training designed to improve interoperability and readiness of the 20 participating nations’ militaries. (U.S. Army Spc. Kevin Wang/Released)

Maj. Shaun Conlin (right), an operations officer assigned to 2nd Squadron, 2nd Cavalry, speak to a British Soldier (left) belonging to the Coldstream Guard, during preparation for a multinational combined arms demonstration during an Exercise Wind Spring Distinguished Visitor's event at Smardan Training Area, Romania, Apr. 18, 2015. The purpose of the event was to demonstrate interoperability between NATO Allies, while also allowing members of the Romanian government, along with British military leadership, to watch as the units worked and trained together in support of Operation Atlantic Resolve-South. (U.S. Army photo by Sgt. William A. Tanner/released)

U.S. Army Lt. Col. Dave Pasquale (center), battalion commander, 4th Battalion, 319th Airborne Field Artillery Regiment, 173rd Airborne Brigade, gives an introductory briefing during the 7th Army Joint Multinational Training Command's Distinguished Visitors Day for Exercise Allied Spirit IV at Hohenfels Training Area, Germany, Jan. 27, 2016. The Allied Spirit IV Exercise focuses on unified land operations and enhancing fires interoperability and integration of NATO Allies. (U.S. Army photo by Visual Information Specialist Gertrud Zach/releasesd)

U.S. Marine Corps F/A-18 Hornets arrive at Rovaniemi Air Base in preparation for exercise Bold Quest 19.1, in Rovaniemi, Finland, May 14, 2019. The U.S. Marine Corps’ participation in Bold Quest 19.1 ensures close-air support interoperability and enables the Marine Corps to globally deploy its forces alongside European allies and partners. The aircraft is assigned to Marine Fighter Attack Squadron 251, Marine Aircraft Group 31, 2nd Marine Aircraft Wing. (U.S. Marine Corps photos by Cpl. Cody Rowe)

Members of U.S. and Israeli Special Operations Forces participate in a water jump training exercise in the Mediterranean Sea as part of Juniper Falcon 17, on March 27, 2017.Juniper Falcon is a bilateral exercise conducted between the Israel defense forces and U.S. European Command to build their partnership and interoperability. .

(US Army photo by SSG Russell Gilchrest)

Local Czech Republic residents wave as they cheer on Troopers assigned to 4th Squadron, 2nd Cavalry Regiment, while watching them participate in Dragoon Crossing, a tactical road march starting out at Rose Barracks, Germany and continuing through the Czech Republic and the Slovak Republic ending in Hungary on Sept. 13, 2015. The purpose of the exercise is to reassure NATO Allies of the U.S. intent during Operation Atlantic Resolve while demonstrating interoperability and freedom of movement throughout Eastern Europe. (U.S. Army photo by Sgt. William A. Tanner/released)

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YAMATO, KUMAMOTO PREFECTURE, Japan — Japan Ground Self-Defense Force Col. Hiroji Yamashita, right, and U.S. Marine Maj. Roy M. Draa speak to their troops Dec. 1 during the opening ceremony for Forest Light 15-1 at the Oyanohara Training Area in Yamato, Kumamoto prefecture, Japan. Forest Light is a semi-annual, bilateral exercise that demonstrates the continued commitment of the U.S. and Japan to increase interoperability of our armed forces and maintain a strong partnership to protect Japan from external aggression. Yamashita is the commanding officer with 42nd Regiment, 8th Division, Western Army, JGSDF. Draa, from Baltimore, Maryland, is the executive officer with 2nd Battalion, 9th Marine Regiment, currently attached to 4th Marine Regiment, 3rd Marine Division, III Marine Expeditionary Force, under the unit deployment program. (U.S. Marine Corps photo by Cpl. Drew Tech/Released)

Visitors from various nations attend an introductory briefing during the 7th Army Joint Multinational Training Command's Distinguished Visitors Day for Exercise Allied Spirit IV at Hohenfels Training Area, Germany, Jan. 27, 2016. The Allied Spirit IV Exercise focuses on unified land operations and enhancing fires interoperability and integration of NATO Allies. (U.S. Army photo by Visual Information Specialist Gertrud Zach/releasesd)