A group of foreign generals and staff members observe a static display of a B-1 bomber at Ellsworth Air Force Base, S.D., Sept. 12, 2016. The event was among five base tours undertaken every six months as a Secretary of Defense-directed engagement for senior military attachés from around the world who are stationed in Washington, D.C. (U.S. Air Force photo by Airman 1st Class Marshall L. Brown)