TRF maintains readiness Published Oct. 26, 2015 By Airman 1st Class Christian Sullivan Minot Air Force Base Public Affairs MINOT AIR FORCE BASE, N.D. -- Members of the 791st Missile Security Forces Squadron tactical response force performed a training exercise at Minot Air Force Base, N.D., Oct. 8, 2015. TRF perform exercises regularly to help maintain readiness. (U.S. Air Force photos/Airman 1st Class Christian Sullivan)