190806-N-IK959-1770 GREAT LAKES, Ill. (Aug. 6, 2019) Damage Controlman 1st Class Jacob Birchmier, a facilitator in the USS Chief Fire Fighting and Damage Control Trainer at Recruit Training Command (RTC), shows Naval ROTC midshipmen candidates how to use a carbon dioxide (CO2) bottle when fighting a shipboard fire. The candidates are part of the New Student Indoctrination (NSI) Cycle 2. The young men and women from across the country are entering their freshman year of the NROTC program at universities nationwide this fall. (U.S. Navy photo by Scott A. Thornloom/Released)