The Naval Update Map shows the approximate current locations of U.S. Carrier Strike Groups (CSGs) and Amphibious Ready Groups (ARGs), 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. This map shows the approximate locations of U.S. Carrier Strike Groups and Amphibious Ready Groups. Carrier Strike Groups The USS Abraham Lincoln is underway in the Atlantic Ocean in an emergency sortie to avoid Hurricane Florence. The USS John C.