YOKOTA AIR BASE, Japan -- Jump wings adorn a Marine paratrooper's backpack at Yokota Air Base, Japan, July 25, 2012. Marine paratroopers assigned to the 31st Marine Expeditionary Unit from Okinawa, Japan, spent five days at Yokota working on their parachute qualifications. During the training, due every 90 days, the MEU practices static line and high-altitude, low-opening jumps. (U.S. Air Force photo by Staff Sgt. Stacy Moless)