U.S. Air Force Staff Sgt. Yuri Motamedi, a security forces craftsman with the 123rd Contingency Response Group, Kentucky Air National Guard, signals airmen during air base ground defense training at Muñiz Air National Guard Base in Carolina, Puerto Rico, Sept. 21, 2023. During the training, Airmen reinforced air base ground defense skills utilized during contingency response operations in contested environments by practicing radio communications, warning and operation orders, vehicle searches, vehicle take-downs, close-quarter battle, and small team tactics. (U.S. Air National Guard photo by Master Sgt. Rafael D. Rosa)