U.S. military pilots fly a V22-Osprey off the coast of San Diego, Calif. Friday, March 30, 2012. U.S. Secretary of Defense Leon Panetta told hundreds of Marines and sailors on Friday that Congress would be putting a gun to America's head if it permits military budget cuts. He also said Afghanistan is making progress against the Taliban but Iran remains a potential threat to the U.S. (AP Photo/Mike Blake, Pool)