Minot leadership attend historic site grand opening Published Oct. 3, 2016 By Airman 1st Class Christian Sullivan Minot Air Force Base Public Affairs PHILIP, S.D. -- Ellsworth Air Force Base honor guard presents the colors during the national anthem at the Minuteman Missile National Historic Site, Philip, S.D., Sept. 24, 2016. Ellsworth was one of three Air Force bases represented at the event. (U.S. Air Force photo/Airman 1st Class Christian Sullivan)