Richard Mullee, 90th Missile Wing Safety Office missile safety superintendent, reviews the 90th Missile Maintenance squadron checklists during the its annual weapons safety inspection June 9, 2015, on F.E. Warren Air Force Base, Wyo. The office reviews checklists and guidance to assist Airmen on the job while remaining safe in their work environment. (U.S. Air Force photo by Airman 1st Class Malcolm Mayfield/Released)