Philippine Sea (June 21, 2006) â Lt. Barry Shaw instructs Ensign David Dagostino on watch standing duties as officer of the deck on the bridge aboard the conventionally-powered aircraft carrier USS Kitty Hawk (CV 63) during 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 Photographerâs Mate Airman Adam York