U.S. Army Lt. Col. Charles Bies and Command Sgt. Major Gary Kurtzhals assigned to 1-68 Armor Battalion, 3rd Armored Brigade Combat Team, 4th Infantry Division, discuss the importance of interoperability following a multi-national force on force live-fire exercise as part of Defender Europe 2022, Drawsko Pomorskie, Poland, May 17, 2022. Defender Europe 22 is a series of U.S. Army Europe and Africa multinational training exercises in Eastern Europe. The exercise demonstrates U.S. Army Europe and Africa’s ability to conduct large-scale ground combat operations across multiple theaters supporting NATO. (U.S. Army photo by Sgt. Andrew Greenwood)