PEARL HARBOR (July 27, 2023) Sailors aboard the Virginia-class fast-attack submarine USS Vermont (SSN 792) heave mooring lines as the ship arrives at its new homeport of Joint Base Pearl Harbor-Hickam, July 27, 2023. Vermont, the first Block IV Virginia-class submarine to enter service, is a new construction submarine that is joining the six Virginia-class submarines already assigned to Commander, Submarine Squadron (CSS) 1. (U.S. Navy photo by Torpedoman's Mate 3rd Class Tommy Heng)