JALALABAD AIRFIELD, Afghanistan -- U.S. Army AH-64E Apache helicopter pilots and ground crew assigned to Task Force Tigershark, 16th Combat Aviation Brigade, 7th Infantry Division prepare aircraft to depart for a mission at Jalalabad Airfield, Afghanistan, April 25, 2017. TF Tigershark is supporting Train, Advise and Assist Command - East and U.S. Forces Afghanistan as part of Operation Freedom's Sentinel.