190625-N-UA103-1062 SAN DIEGO (June 25, 2019) Electrician’s Mate 3rd Class Anthony Snyder, right, checks the self-contained breathing apparatus mask on Damage Controlman 3rd Class Cody Howell during a damage control exercise aboard the aircraft carrier USS Theodore Roosevelt (CVN 71). Theodore Roosevelt is homeported in San Diego. (U.S. Navy photo by Mass Communication Specialist 3rd Class Julian Davis/Released)