Naval Air Station North Island, Calif. (Feb. 20, 2004) - Crewmembers of the nuclear powered aircraft carrier USS Nimitz (CVN 68), participate in a command-wide blood drive on the pier next to the carrier. The U.S. Navy's Mobile Blood Bank assigned to Naval Medical Center San Diego, Calif., collected over 150 pints of blood, which will be used to help local hospitals and troops overseas. Nimitz is currently undergoing a Planned Increment Availability (PIA). U.S. Navy photo by Photographer'...