U.S. Marine Corps Lance Cpl. Keneth J. Shuler, a crew master assigned to Marine Heavy Helicopter Squadron (HMH) 366, unravels a cord during a helocast training exercise near Marine Corps Base Camp Lejeune, N.C., June 10, 2015. HMH-366 supported Marines assigned to the 3rd Marine Special Operations Battalion by providing air transportation in a CH-53E Super Stallion. (U.S. Marine Corps photo by Lance Cpl. Koby I. Saunders/Released)