A U.S. Air Force B-1B Lancer, assigned to the 37th Expeditionary Bomb Squadron, deployed from Ellsworth Air Force Base (AFB), S.D., takes off from Andersen AFB, Guam, Oct. 2, 2017. The Lancer conducted a bilateral training mission with Royal Australian Air Force Joint Terminal Attack Controllers as part of Exercise Black Dagger, a training exercise designed to foster increased interoperability between Australia and the U.S. (U.S. Air Force photo/Tech. Sgt. Richard Ebensberger)