Two Marines from the 1st Marine Aircraft Wing in Okinawa use hand signals during an F/A-18 Hornet launch at Eielson Air Force Base, Alaska, on Tuesday, June 6, 2006, during exercise Northern Edge 2006. The joint training exercise hosted by Alaskan Command is one of a series of U.S. Pacific Command exercises that prepare joint forces to respond to crises in the Asian Pacific region. (U.S. Air Force photo/Staff Sgt. Joshua Strang)