200416-N-BM202-1504 GREAT LAKES, Ill. (April 16, 2020) Boatswain's mate 2nd class Marcus Murphy teaches basic seamanship skills to recruits inside USS Marlinespike at Recruit Training Command. More than 35,000 recruits train annually at the Navy's only boot camp. (U.S. Navy photo by Mass Communication Specialist 1st Class Camilo Fernan/Released)