Lt. Col. Kirk Greene, right, accepts command of the 341st Civil Engineer Squadron from Col. Lisa Martinez, 341st Mission Support Group commander, during a change of command ceremony June 24, 2021, at Malmstrom Air Force Base, Mont. Guidon bearer Master Sgt. Charles Morse, 341st Civil Engineer squadron first sergeant, looks on. (U.S. Air Force photo by Airman 1st Class Ivan Kril)