The Naval Update Map shows the approximate current locations of U.S. Carrier Strike Groups and Amphibious Ready Groups, based on available open-source information. No classified or operationally sensitive information is included in this weekly update. CSGs and ARGs are the keys to U.S. dominance over the world's oceans. A CSG is centered on an aircraft carrier, which projects U.S. naval and air power and supports a Carrier Air Wing, or CVW. The CSG includes significant offensive strike capability. An ARG is centered on three amphibious warfare ships, with a Marine Expeditionary Unit embarked. An MEU is built around a heavily reinforced and mobile battalion of Marines. Carrier Strike Groups The USS Theodore Roosevelt CSG is on a scheduled port visit to Manila, Philippines, while underway in a deployment in the U.S. 7th Fleet AOR supporting maritime security operations and conducting theater security cooperation efforts. The USS John C.