Safe & Secure Published Feb. 16, 2016 By Airman 1st Class Jessica Weissman Minot Air Force Base Public Affairs MINOT AIR FORCE BASE, N.D. -- Senior Airman Ian Jerls, a structural journeyman assigned to the 5th Civil Engineer Squadron, assembles a lock core, cuts a key and installs a door handle at Minot Air Force Base, N.D., Feb 11, 2016. The 5th CES lock shop ensures the assembly and security of doors throughout Minot AFB.