An honor guard welcomes Secretary of Defense Lloyd J. Austin III as he arrives in Sofia, Bulgaria on March 18, 2022. (DoD photo by Chad J. McNeeley)

Secretary of Defense Lloyd J. Austin III speaks to Soldiers assigned to 2nd Cavalry Regiment in Bulgaria on March 18, 2022. (DoD photo by Chad J. McNeeley)

A firing squad from 1st Battalion, 26th Infantry Regiment, 2nd Brigade, 101st Airborne Infantry Division (Air Assault), in a High Mobility Multi-Wheeled Vehicle right, and a Ukrainian armored military vehicle from the 10th Mountain Assault Brigade prepares to engage targets during a defensive maneuvers during Rapid Trident 2019 in Yavoriv, Ukraine, Sept. 26, 2019. The meeting is to discuss the first ever brigade sized element joint mounted defensive maneuver live fire exercise performed by the U.S. and the Armed Forces of Ukraine, which demonstrates the defensive capabilities of the multi-national force to build a stronger and more unified Europe. (U.S. Army photo by Sgt. Kyle Larsen.)

Cpt. Jason Lieuallen, the 115th Regional Support Group Operations Officer with the California Army National Guard, stands in formation during the opening ceremony for Rapid Trident 2019, which involves approximately 3,700 personnel from 14 nations, Sept. 13-28, 2019, at the International Peacekeeping Security Centre near Yavoriv, Ukraine. Rapid Trident is an annual, multinational exercise that supports joint combined interoperability among the partner militaries of Ukraine and the United States, as well as Partnership for Peace nations and NATO allies. (U.S. Army photo by Sgt. Kyle Larsen.)

A high mobility multi-wheeled vehicle from the 101st Airborne Division (Air Assault) provides fire support for a Ukraine engineer vehicle during a water gap crossing demonstration as part of Rapid Trident 2019 in Yavoriv, Ukraine, Sept. 20, 2019. RT19 is an annual, multinational exercise occurring from Sept. 13-28, 2019, which involves approximately 3,700 personnel from 14 nations, that supports joint combined interoperability among partner militaries of Ukraine and the United States, as well as Partnership for Peace nations and NATO allies. (U.S. Army photo by Sgt. Kyle Larsen.)

Yavoriv, Ukraine – 27th Infantry Brigade Combat Team Soldiers assigned to the Joint Multinational Training Group – Ukraine host a Christmas dinner at the Yavoriv Combat Training Center near Yavoriv, Ukraine. Currently more than 220 of the Brigade's Soldiers are deployed overseas working alongside the Ukrainian Army. (U.S. Army photo by Sgt. Alexander Rector)

A Ukrainian soldier assigned to the Yavoriv Combat Training Center opposing force unit engages approaching soldiers from the Ukrainian army's 1st Airmobile Battalion, 79th Air Assault Brigade during a battalion force-on-force exercise that served as the battalion's capstone event while training at the Yavoriv CTC on the International Peacekeeping and Security Center, near Yavoriv, Ukraine, on June 29. (Photo by Sgt. Anthony Jones, 45th Infantry Brigade Combat Team)

A Ukrainian soldier assigned to the Yavoriv Combat Training Center opposing force unit observes his field of fire, watching for approaching soldiers from the Ukrainian army's 1st Airmobile Battalion, 79th Air Assault Brigade during a battalion force-on-force exercise that served as the battalion's capstone event while training at the Yavoriv CTC on the International Peacekeeping and Security Center, near Yavoriv, Ukraine, on June 29. (Photo by Sgt. Anthony Jones, 45th Infantry Brigade Combat Team)

A Ukrainian army noncommissioned officer assigned to the Yavoriv Combat Training Center opposing force unit listens to Sgt. Christopher Hammond during an NCO professional development class at the CTC on the International Peacekeeping and Security Center in Western Ukraine, on Oct. 7. (Photo by Sgt. Anthony Jones, 45th Infantry Brigade Combat Team)

A Ukrainian army noncommissioned officer teaches a class about the AK-74 rifle during a combined U.S. and Ukrainian NCO professional development class at the Yavoriv Combat Training Center on the International Peacekeeping and Security Center in Western Ukraine, on Oct. 7. (Photo by Sgt. Anthony Jones, 45th Infantry Brigade Combat Team)

Associate Director for International Liaison U.S. Ambassador Douglas Griffiths provides feedback to a student seminar group during a strategy presentation exercise. The exercise was the final project during the three-week long Countering Transnational Organized Crime course at the George C. Marshall European Center.

CTOC adjunct professor Khatia Dekanoidze, the first politically independent head of the National Police of Ukraine, shares her insights on corruption during the three week Combatting Transnational Organized Crime course at the George C. Marshall European Center.

Students work on a strategy to counter organized crime and corruption in Ukraine during the three week Countering Transnational Organized Crime course at the George C. Marshall European Center.

A Ukrainian soldier salutes his country's flag during a Ukrainian Independence Day celebration in Yavoriv, Ukraine, on Aug. 24. (Photo by Spc. Samuel Mason, 45th Infantry Brigade Combat Team)

Secretary of Defense Jim Mattis and U.S. Ambassador to Ukraine Marie Yovanovitch speak to the commander of the U.S Army's 45th Infantry Brigade Combat Team, Col. David Jordan in Kyiv, Ukraine, on Aug. 24, 2017. 45th IBCT Soldiers were the first ever U.S. troops to participate in the Ukrainian celebration.The 45th is deployed to Ukraine in support of the Joint Multinational Training Group-Ukraine, an international coalition dedicated to building the training capacity of the Ukrainian army. (DOD photo by U.S. Air Force Staff Sgt. Jette Carr)

Oklahoma National Guard Soldiers from the 45th Infantry Brigade Combat Team salute as Ukrainian President Petro Poroschenko passes their formation during a parade in Kyiv, Ukraine on Aug. 24. The 45th IBCT is currently deployed to Ukraine in support of the Joint Multinational Training Group-Ukraine, an international coalition dedicated to building the training capacity of the Ukrainian Army. The U.S. will continue to train and advise Ukrainian forces until 2020. (Photo by Sgt. Anthony Jones, 45th Infantry Brigade Combat Team)