Petty Officer 3rd Class Cohen Faucett, a boatswain's mate from Coast Guard Station Calumet Harbor in Chicago, reviews the proper operation procedures of the M16A2 rifle with Chief Petty Officer Carey Jung, a member of the Coast Guard mounted automatic weapons training team, at Fort Knox, Ky., Nov. 4, 2013. Students, like Faucett, are required to be familiar inside and out with the weapons as part of their training. (U.S. Coast Guard photo by Petty Officer 3rd Class Christopher M. Yaw)