841 MSFS Defenders conduct CQB training at Malmstrom AFB
U.S. Air Force Senior Airman Steven Hoover, 841st Missile Security Forces Squadron Defender, establishes a stack before entering a room during close-quarters battle training at Malmstrom Air Force Base, Montana, June 24, 2026. Establishing a stack teaches defenders to communicate nonverbally and enter confined spaces with speed, discipline and precision. (U.S. Air Force photo by Airman 1st Class Teniya Caldwell)