A CH-47F Chinook helicopter crew chief with Task Force Flying Dragons, reloads a M240B machine gun aboard a Chinook during aerial door gunnery training Sept. 7, 2014, at a training site in Southern Afghanistan.
U.S Army CH-47F Chinook helicopter crew chiefs, assigned to the 25th Combat Aviation Brigade, 25th Infantry Division, support 1st Special Forces Group during helo cast operations into the waters off of Marine Corps Training Area Bellows, Hawaii, March 16, 2015.
Staff Sgt. Michael Wright scans the area for potential obstacles during a training mission Aug. 12, 2014, near Yokota Air Base, Japan. Wright is a 459th Airlift Squadron UH-1N Huey helicopter crew chief.