Petty Officer Barry Franklin and Petty Officer 2nd Class Matthew MacArthur, a maritime enforcement specialist at U.S. Coast Guard Station Belle Isle, instruct how to properly sight-in on target with the M16 rifle for basic rifle marksmanship course at the Alpena Combat Readiness Training Center in Alpena, Michigan, April 25, 2018. The Firearms Instructor recertification and evaluation is an annual training of all the Coast Guard firearms instructors located within the 9th District. (U.S. Coast Guard photo by Petty Officer 3rd Class Brian McCrum)