Staff Sgt. John Hoiten, 28th Security Forces Squadron combat arms instructor, right, teaches Staff Sgt. Jesse Hansen, 28th SFS flight chief, left, during a M320 grenade launcher course at Ellsworth Air Force Base, S.D., Aug. 23, 2021. The class consisted of six Airmen from the 28th SFS Global Strike Challenge team. (U.S. Air Force photo by Senior Airman Alexi Bosarge)