U.S. Air Force pararescuemen, assigned to the 83rd Expeditionary Rescue Squadron, Bagram Airfield, Afghanistan, aim their rifles during weapons training Feb. 21, 2018. Pararescuemen conduct training on all aspects of combat, medical procedures and search and rescue tactics to hone their skills, providing the highest level of tactical capabilities to combatant commanders. (U.S. Air Force Photo by Tech. Sgt. Gregory Brook)