An instructor with the 620th Ground Combat Training Squadron briefs a Security Forces Airman from F.E. Warren Air Force Base, Wyo., during the third day of a 10-day nuclear-convoy training exercise at Camp Guernsey, Wyo., Oct. 17, 2012. The realistic training environment offers Airmen an opportunity to experience the noticeable difference between shooting while stationary, and shooting while in a moving vehicle. (U.S. Air Force photo by Airman 1st Class Kayla Newman/Released)