An A-10C Thunderbolt II from the 40th Flight Test Squadron, returns to Eglin Air Force Base, Fla., after a test mission. The aircraft is loaded up with weaponry to test the combat carriage limits of the Sargent Fletcher external fuel tank. The A-10 flight personnel are testing to ensure the A-10 can carry the tank into a combat environment safely. If proven to be safe to carry, the tank will add up to 60 minutes of flight time to its combat sortie. (U.S. Air Force photo/Samuel King Jr.)