180606-N-KC128-0096 PEARL HARBOR (June 6, 2018) A Sailor assigned to the Los Angeles-class fast-attack submarine USS Columbia (SSN 771) talks on the radio as the boat prepares to moor at Joint Base Pearl Harbor-Hickam, Hawaii, following a six-month western Pacific deployment. (U.S. Navy photo by Mass Communication Specialist 1st Class Daniel Hinton/Released)