Combat controllers and pararescuemen from the Kentucky Air National Guard’s 123rd Special Tactics Squadron jump from a Kentucky Army National Guard UH-60 Blackhawk helicopter into the Ohio River during the Thunder Over Louisville air show in downtown Louisville, Ky., April 23, 2016. The demonstration displays techniques the Airmen use when recovering downed personnel or executing a covert insertion into enemy territory. (U.S. Air National Guard photo by Maj. Dale Greer)