EMT trains to maintain security Published July 29, 2016 By Airman 1st Class Christian Sullivan Minot Air Force Base Public Affairs MINOT AIR FORCE BASE, N.D. -- Airman 1st Class Joseph McHatton, 91st Missile Maintenance Squadron electromechanical technician, works on the secondary door combination lock at Minot Air Force Base, N.D., July 27, 2016. Making sure the technicians understand how the locks operate and effect other components in the secondary door ensures the security works smoothly to keep the launch facilities secure. (U.S. Air Force photo/Airman 1st Class Christian Sullivan)