South Carolina Air National Guard Staff Sgt. Julio Medina, foreground, fires an M249 machine gun at his target while Tech. Sgt. Ismeal Fierro looks on during heavy weapons training at Poinsett Electronic Combat Range, Sumter, S.C., Sept. 17, 2017. Medina is a police officer and Fierro is a combat arms instructor assigned to the 169th Security Forces Squadron. South Carolina Air National Guard photo by Tech. Sgt. Jorge Intriago