A U.S. Army Soldier with the 558th Transportation Company prepares to call into the 159th Aviation Regiment, 5th Battalion for a 9-line medical evacuation request during an exercise at Fort Eustis, Va., March 3, 2016. The Soldiers practiced calling in a 9-line to familiarize themselves with the terms and requirements of the request. (U.S. Air Force photo by Staff Sgt. Natasha Stannard)