181012-N-PL946-1090 GREAT LAKES, Ill. (Oct. 12, 2018) Aviation ordnancemen assigned to Recruit Training Command conduct a passing of the flag ceremony during a retirement ceremony for Master Chief Aviation Ordnanceman Oliver Brown. Brown retires after 30 years of naval service. More than 30,000 recruits graduate annually from the Navy's only boot camp. (U.S. Navy photo by Mass Communication Specialist 2nd Class Spencer Fling/Released)