170419-N-JN506-354 PITI, Guam (April 19, 2017) The Los Angeles-class fast attack submarine USS Key West (SSN 722) sits pierside in its home port of Guam. Key West is one of four forward-deployed submarines homeported in Apra Harbor, Guam, which is also home to both of the U.S. Navy's submarine tenders. (U.S. Navy photo by Petty Officer 1st Class Jamica Johnson/Released)