A U.S. Black Hawk helicopter takes off after deploying soldiers during the Swift Response 22 military exercise at the Krivolak army training polygon in the central part of North Macedonia, May 12, 2022. Two U.S. Army Black Hawk medical evacuation helicopters crashed during training Wednesday night, March 29, 2023, in Kentucky, killing nine soldiers. The Black Hawk is a twin-engine, four-bladed, medium-lift, utility helicopter developed for the U.S. Army since the 1970s by Sikorsky Aircraft of Stratford, Conn. (AP Photo/Boris Grdanoski, File)