Master Sgt. Christopher Brunsman, 20th Operations Group first sergeant, works with his team to construct a defensive fighting position during multi-capable Airman training at Shaw Air Force Base, S.C., Oct. 17, 2023. The MCA course at Shaw AFB invited first sergeants from across the wing to participate and better familiarize themselves with the practices and techniques being taught to the Airmen they serve, making them a vital resource in educating their squadrons on the expanding Agile Combat Employment and MCA initiatives. (U.S. Air Force photo by Airman 1st Class Steven Cardo)