Fourteen Security Forces teams from U.S. Air Force major commands, Great Britain and Germany will be testing their skills in realistic weapons scenarios, simulated dismounted operations and grueling combat endurance events as part of the 2018 Air Force Defender Challenge, to be held Sept. 10-13 in San Antonio, Texas.

Members of the Air Force Action Shooting Team pose for a portrait in between stages of the United States Practical Shooting Association’s Multigun National Championship in Boulder City, Nevada, April 21, 2018. Members of the Air Force team finished 4th and 12th out of 63 competitors in the Open Division, and 18th, 28th, 55th and 81st out of 166 competitors in the Tactical Division. (U.S. Air Force photo by Senior Airman Kevin Tanenbaum)

U.S. Air Force Staff Sgt. Ilya Makarenko, 20th Security Forces Squadron (SFS) installation patrolman, left, and Senior Airman Anthony Greene, 20th SFS installation patrolman, right, guard Airman 1st Class Tyler Crawford, 20th SFS installation entry point controller, during an exercise at Shaw Air Force Base, S.C., Jan. 31, 2018. Makarenko and Greene apprehended Crawford, but could not move him until the entire building was secured. (U.S. Air Force photo by Airman 1st Class Benjamin Ingold)