U.S. Air Force Staff Sgt. Estaban Gonawicha, 435th Security Forces Squadron ground combat readiness training center instructor, poses for a photo before exercise Frozen Defender in Grostenquin, France, Jan. 14, 2020. Frozen Defender tests the squadron’s capabilities in a contested environment under harsh conditions. Gonawicha was equipped with an AT4, an 84-mm unguided anti-tank weapon, which could be used to disable armored vehicles. (U.S. Air Force photo by Staff Sgt. Devin Boyer)