Staff Sgt. Frederick Becker, of the 270th Engineering Installation Squadron with the Pa. Air National Guard, explains safety procedures at permit-required confined spaces -- like a utility hole -- to a group of students from the Career Institute of Technology, Easton, Pa., during a school tour at Horsham Air Guard Station, Pa., March 18, 2016. The students were given a tour by the 111th Attack Wing recruiters throughout a RED HORSE, Det. 1 hangar and the 270th EIS. (U.S. Air National Guard photo by Tech. Sgt. Andria Allmond)