Sunrise on the tarmac, Tyndall Air Force Base, Florida

F-22 Raptors from Tyndall Air Force Base, Fla., and F-16 Fighting Falcons from the D.C. Air National Guard sit on the tarmac during Sentry Savannah 15-1 at the Georgia Air National Guard's Air Dominance Center. Sentry Savannah, a National Guard Bureau-sponsored exercise, is the Air National Guard's largest Fighter Integration, Air-to-Air, training exercise encompassing fourth and fifth generation aircraft. (U.S. Air National Guard photo by Master Sgt. Jerry Harlan/Released)