OVER MARCH AIR RESERVE BASE, Calif. -- Four F-16 Fighting Falcons from the U.S. Air Force Thunderbirds flight demonstration team fly in diamond formation during Airfest 2004 here April 24. The F-16s are assigned to the U.S. Air Force Air Demonstration Squadron at Nellis Air Force Base, Nev. (U.S. Air Force photo by Tech. Sgt. Joe Zuccaro)