B-52 Stratofortress aircrew, assigned to the 23rd Expeditionary Bomb Squadron, pose for a photo after returning from a flight at an undisclosed location in Southwest Asia, June 16, 2017. The flight was the 400th consecutive sortie without a maintenance cancellation on the day the unit celebrated its 100th anniversary. (U.S. Air Force photo by Staff Sgt. Trevor T. McBride)