180530-N-GR168-0168 MEDITERRANEAN SEA (May 30, 2018) Damage Controlman 1st Class Gregory Alden, right, from Beach Park, Illinios, checks the seal on the Mark 50 gas mask worn by Aviation Boatswain’s Mate (Handling) 3rd Class Lydon Schwartz, from Pittsburgh, during a chemical, biological and radiological training exercise aboard the San Antonio-class amphibious transport dock ship USS New York (LPD 21) May 30, 2018. New York, homeported in Mayport, Florida, is conducting naval operations in the U.S. 6th Fleet area of operations in support of U.S. national security interest in Europe and Africa. (U.S. Navy photo by Mass Communication Specialist 2nd Class Lyle Wilkie/Released)