![Members of the 151st Security Forces Squadron conduct M4 rifle and M9 pistol training at Camp Williams, Utah on April 24, 2019. Security Forces members spent the week, conducting proficiency training to Members of the 151st Security Forces Squadron conduct M4 rifle and M9 pistol training at Camp Williams, Utah on April 24, 2019. Security Forces members spent the week, conducting proficiency training to](https://c8.alamy.com/comp/T6HC39/members-of-the-151st-security-forces-squadron-conduct-m4-rifle-and-m9-pistol-training-at-camp-williams-utah-on-april-24-2019-security-forces-members-spent-the-week-conducting-proficiency-training-to-ensure-they-are-full-trained-on-the-most-current-skills-and-tactics-us-air-national-guard-photo-by-tech-sgt-john-winn-T6HC39.jpg)
Members of the 151st Security Forces Squadron conduct M4 rifle and M9 pistol training at Camp Williams, Utah on April 24, 2019. Security Forces members spent the week, conducting proficiency training to
![U.S. Air Force M4 carbines stand in a rifle stack during Polar Force 21-5 at Camp Mad Bull on Joint Base Elmendorf-Richardson, Alaska, April 9, 2021. Polar Force is a training exercise U.S. Air Force M4 carbines stand in a rifle stack during Polar Force 21-5 at Camp Mad Bull on Joint Base Elmendorf-Richardson, Alaska, April 9, 2021. Polar Force is a training exercise](https://c8.alamy.com/comp/2GKFJJX/us-air-force-m4-carbines-stand-in-a-rifle-stack-during-polar-force-21-5-at-camp-mad-bull-on-joint-base-elmendorf-richardson-alaska-april-9-2021-polar-force-is-a-training-exercise-designed-to-test-jbers-mission-readiness-as-well-as-honing-airmens-skills-and-techniques-in-a-simulated-expeditionary-environment-airmen-refined-their-contingency-tactics-techniques-and-procedures-to-support-the-bases-ability-to-integrate-mobilize-and-prepare-assigned-personnel-aircraft-and-equipment-for-a-wartime-mission-2GKFJJX.jpg)
U.S. Air Force M4 carbines stand in a rifle stack during Polar Force 21-5 at Camp Mad Bull on Joint Base Elmendorf-Richardson, Alaska, April 9, 2021. Polar Force is a training exercise
![File:A police officer peers through the telescope sight of an M4 carbine as he breaches into the Live Fire Shoot House at the Camp Atterbury Joint Maneuver Training Center in Edinburgh, Indiana, File:A police officer peers through the telescope sight of an M4 carbine as he breaches into the Live Fire Shoot House at the Camp Atterbury Joint Maneuver Training Center in Edinburgh, Indiana,](https://upload.wikimedia.org/wikipedia/commons/thumb/5/54/A_police_officer_peers_through_the_telescope_sight_of_an_M4_carbine_as_he_breaches_into_the_Live_Fire_Shoot_House_at_the_Camp_Atterbury_Joint_Maneuver_Training_Center_in_Edinburgh%2C_Indiana%2C_May_13%2C_2010_100513-A-MG787-323.jpg/731px-thumbnail.jpg)