Valiant Shield
A U.S. Air Force B-52 Stratofortress strategic bomber with the 20th Bomb Squadron, operating under the tactical control of the 36th Operations Group, lands at Andersen Air Force Base, Guam, during Valiant Shield 2014, Sept. 16, 2014. Valiant Shield is a U.S.-only exercise, integrating U.S. Navy, Air Force, U.S. Army and U.S. Marine Corps assets, offering real-world joint operational experience to develop capabilities that provide a full range of options to defend U.S. interests and those of its allies and partners. (U.S. Marine Photo by Lance Cpl. Abbey Perria/Released)