Navy SEALs prepare their parachutes before boarding a C-17 Globemaster III April 15, 2010, at Naval Air Station Norfolk Va., April 15, 2010. The jumps were part of a joint training exercise with 517th Airlift Squadron members from Elmendorf Air Force Base, Alaska. The training consisted of jumps between 5,000 and 12,500 feet. (U. S. Air Force photo/Staff Sgt. Brian Ferguson)