Aircraft take-off as Valiant Shield 2014 begins
A U.S. Air Force KC-10 Extender air refueling aircraft with the 305th Air Mobility Wing, Air Mobility Command, speeds down the Andersen Air Force Base, Guam, flightline as Valiant Shield begins. Valiant Shield is a biennial exercise in which participating forces will focus on the integration of joint training among U.S. forces. (U.S. Marine Corps photo by Cpl. Lena Wakayama/Released)