U.S. Army Pvt. Dustin Westpool, an Advanced Individual Training student assigned to the 2nd Battalion, 210th Aviation Regiment, repairs CH-47 Chinook FH controls during a class at Fort Eustis, Va., Feb. 20, 2013. The battalion is divided into three companies – A, B and C – that specialize in training on particular airframes and components. (U.S. Air Force photo by Staff Sgt. Ashley Hawkins/Released)