An F-22 Raptor flies during a refueling mission during Sentry Savannah 15-1 Feb. 15, 2015. More than 1,400 total-force service members from the Washington D.C. Air National Guard, Minnesota Air National Guard (Duluth) and Tyndall Air Force Base, Fla., gathered in Savannah, Ga., to support the Sentry Savannah 15-1 exercise. (U.S. Air National Guard photo by Senior Airman Justin Hodge/Released)