Reservists bring out the big guns - Senior Airman Christopher Resolute, 512th Security Forces Squadron defender, fires a M240B machine gun May 7, 2021, at Marine Corps Base Quantico, Virginia. Stationed at Dover Air Force Base, Delaware, more than 20 reserve defenders traveled to Quantico for heavy weapons training. (U.S. Air Force photo by Tech. Sgt. Zachary Cacicia)