170721-N-XN518-072 SAN DIEGO (July 21, 2017) Sailors assigned to the Wasp-class amphibious assault ship USS Essex (LHD 2) combat a simulated fire during a main space fire drill. Essex is homeported in San Diego, Calif., preparing for a scheduled deployment. (U.S. Navy photo by Mass Communication Specialist 2nd Class Irwin D. Sampaga/Released)