Under which combatant command does U.S. Fleet Forces Command operate within its own AOR?

U.S. Fleet Forces Command operates within its own Area of Responsibility (AOR) under United States Northern Command (USNORTHCOM). This command is tasked with ensuring the defense of the continental United States, Alaska, Canada, and its territorial waters. The operational focus of USNORTHCOM includes protecting the homeland against threats, which incorporates naval operations coordinated by U.S. Fleet Forces Command.

The reason this answer is accurate lies in the specific missions and regional focus of USNORTHCOM as it relates to the navy's responsibilities and operational readiness in North America. U.S. Fleet Forces Command plays a vital role in readiness and supports various operations conducted within the AOR assigned to USNORTHCOM.

In contrast, the other commands—such as USSOUTHCOM, USCENTCOM, and USEUCOM—focus on different geographic regions, including South America, Central Asia, and Europe, respectively. Therefore, they do not align with the operational scope of U.S. Fleet Forces Command, which is primarily focused on the AOR covered by USNORTHCOM. This highlights the connection between the command and its specific geographic priorities, affirming the correct choice.