U.S. Air Force Staff Sgt. Joshua Medina Rivera, an active shooter instructor with the 156th Security Forces Squadron at Muñiz Air National Guard Base, Puerto Rico Air National Guard, provides security forces training to 156th Wing Airmen, April 2, 2020. Airmen from various career fields volunteered to become certified to perform security forces duties to augment additional security forces personnel in the PRANG. (U.S. Air National Guard video by Master Sgt. Caycee Watson)
