A Range in Use sign glows as a warning for Airmen entering the combat arms training and maintenance firing range on Joint Base Andrews, Md., Jan. 30, 2018. Airmen use the firing range to maintain proficiency with their assigned weapon. (U.S. Air Force photo by Airman Michael S. Murphy)

Senior Airman Daniel Schaan, 11th Civil Engineer Squadron structural journeyman, loads ammunition into an M4 carbine magazine during a weapons qualification course on Joint Base Andrews, Md., Jan. 30, 2018. Airmen with the 11th Wing complete their weapons qualification before deploying, changing duty stations or for renewal. (U.S. Air Force photo by Airman Michael S. Murphy)

Airmen with the 11th Wing fire M4 carbines during weapons qualification training on Joint Base Andrews, Md., Jan. 30, 2018. Airmen complete their qualifications to maintain readiness. (U.S. Air Force photo by Airman Michael S. Murphy)

Senior Airman Eliana Rodriguez, 11th Security Support Squadron combat arms instructor, speaks with an Airman on his accuracy during a weapons qualification course on Joint Base Andrews, Md., Jan. 30, 2018. CATM instructors assist Airmen to increase weapon proficiency. (U.S. Air Force photo by Airman Michael S. Murphy)

Empty magazine cartridges are shown in the combat arms training and maintenance firing range on Joint Base Andrews, Md., Jan. 30, 2018. The weapons qualification course helps maintain Airmen readiness and deployment capability. (U.S. Air Force photo by Airman Michael S. Murphy)