Pacific Ocean (June 18, 2006) - The Nimitz-class aircraft carrier USS Ronald Reagan (CVN 76), foreground, USS Kitty Hawk (CV 63), center, USS Abraham Lincoln (CVN 72) and their associated carrier strike groups steam in formation while 17 aircraft from the Air Force, Navy, and Marine Corps fly over them during a joint photo exercise (PHOTOEX) while preparing for exercise Valiant Shield 2006. Valiant Shield focuses on integrated joint training among U.S. military forces, enabling real-world proficiency in sustaining joint forces and in detecting, locating, tracking and engaging units at sea, in the air, on land and cyberspace in response to a range of mission areas. U.S. Navy photo by Chief Photographer's Mate Todd P. Cichonowicz
