AIR POWER DEMONSTRATION U.S. Navy Chief Petty Officer Sean Coburn, a rescue swimmer, descends from an HH-60H Seahawk helicopter during an air power demonstration on board the Nimitz-class aircraft carrier USS John C. Stennis while under way in the Pacific Ocean, Aug. 24, 2007. SHARE: Download: Full Size (0.02 MB) Credit: VIRIN: 952999-K-ALX04-257.jpg Photo Gallery