Staff Sgt. Zackery Waitkus, 341st Security Support Squadron armorer, performs a weapon function check on an M-18 pistol May 8, 2019, at Malmstrom Air Force Base, Mont. The addition of the M-18 pistol to the armory is part of the reconstitute defenders initiative, which is designed to modernize weapons and increase warfighter capability. (U.S. Air Force photo by Devin Doskey)