U.S. Air Force Tech. Sgt. Christopher Groessler, 455th Expeditionary Maintenance Squadron munitions flight production supervisor, checks the alignment of the bomb strake on a GBU-54, a 500-pound Laser Joint Direct Attack Munitions, at Bagram Airfield, Afghanistan, Dec. 19, 2018. AMMO troops are not only responsible for building bombs, but also for accountability, serviceability, storage, munitions command and control, maintenance, equipment maintenance, line delivery and precision guided munitions maintenance. (U.S. Air Force photo by Senior Airman Kaylee Dubois)