The Launcher Systems and Payload Integration Division (Code 452) is formally assigned In-Service Engineering Agent (ISEA), Design Agent (DA), Technical Direction Agent (TDA), Systems Integration Agent (SIA) and Acquisition Engineering Agent (AEA) duties for submarine weapons launching systems (horizontal and vertical) and their related mechanical, hydraulic, pneumatic and electrical systems, subsystems and components. Code 45 is: (1) the lead in-service engineering, systems development, and payload integration activity for horizontal submarine Weapon Launch and Handling Systems (WLHS), submarine Vertical Launch Systems (VLS) and select surface ship launcher systems; and (2) is responsible for life-cycle support of the TOMAHAWK and Encapsulated HARPOON Weapon System (EHWS) programs and their related support equipment.