A U.S. Air Force B-1B Lancer assigned to the 34th Expeditionary Bomb Squadron, deployed from Ellsworth Air Force Base, S.D., takes off during Exercise Valiant Shield at Andersen AFB, Guam, Sept. 14, 2016. Valiant Shield is a biennial U.S. Air Force, Navy and Marine Corps exercise held in Guam, focusing on real-world proficiency in sustaining joint forces at sea, in the air, on land and in cyberspace. (U.S. Air Force photo by Tech. Sgt. Richard P. Ebensberger)