170821-N-NJ910-0014 MAYPORT, Fla. (Aug. 21, 2017) Sailors wear joint service mask leakage testers in the ready room of the amphibious assault ship USS Iwo Jima (LHD 7) during a chemical, biological and radiological fit test. Iwo Jima is in port conducting a scheduled continuous maintenance availability in preparation for their upcoming deployment. (U.S. Navy photo by Mass Communication Specialist Seaman Dary M. Patten/Released)