200429-N-PL946-1125 GREAT LAKES, Ill. (April 29, 2020) A recruit uses a CO2 bottle to extinguish a simulated fire during firefighting and damage control training at the USS Chief Fire Fighter Trainer at Recruit Training Command (RTC). More than 35,000 recruits train annually at the Navy's only boot camp. (U.S. Navy photo by Mass Communication Specialist 1st Class Spencer Fling/Released)