Senior Airman Joseph Mendoza, 736th Aircraft Maintenance Squadron C-17 crew chief and head trainer, demonstrates a modified parade rest position typically used during a prayer or invocation Jan. 15, 2019 at Dover Air Force Base, Delaware. To become a member, recruits must first complete a 10-day training session that covers military ceremonies, standing manuals, command voices, flag folding, basic rifle drill, and uniform inspections. (U.S. Air Force photo by Mauricio Campino)