Staff Sgt. Dallas Nickerson, left, 60th Security Forces Squadron installation patrolman, briefs members of the 60th SFS at afternoon guardmount June 18, 2019, at Travis Air Force Base, Calif. Guardmount is a mandatory formation for all security forces Airmen prior to posting out for their shift. The members of the 60th SFS are responsible for protecting resources and personnel for the Air Force’s largest air mobility wing. (U.S. Air Force photo by Tech. Sgt. James Hodgman)