180117-N-IY633-090 GREAT LAKES, Ill. (Jan. 17, 2018) U.S. Navy recruits practice going on air with a Self-Contained Breathing Apparatus (SCBA) at Recruit Training Command (RTC). Recruits practice firefighting through hands-on training, which means recruits will 'train how we fight'. About 30,000 to 40,000 recruits graduate annually from the Navy's only boot camp. (U.S. Navy photo by Mass Communication Specialist 1st Class Amanda S. Kitchner/Released)