Coast Guard Sector Delaware Bay oversees port security and maritime safety for the Delaware River and Bay region.

Defense Supply Center Philadelphia provides clothing, textiles, and subsistence for the military.

Naval Support Activity Philadelphia is a U.S. military installation in Pennsylvania.

Willow Grove Joint Reserve Base supports Navy, Marine Corps, and Army Reserve units in the Philadelphia region.

Carlisle Barracks is home to the U.S. Army War College and the Army Heritage and Education Center.

Tobyhanna Army Depot is the largest full-service electronics maintenance facility in the Department of Defense.

Letterkenny Army Depot repairs and overhauls tactical missile systems, air defense systems, and ground support equipment.

Fort Indiantown Gap is the only Army National Guard training center on the East Coast and home to the Eastern Army National Guard Aviation Training Site.

Naval Station Norfolk is the world's largest naval station, supporting 75 ships and 134 aircraft.

Naval Base San Diego is the principal homeport of the Pacific Fleet and houses over 50 ships.

Naval Station Mayport is the third largest naval facility in the continental United States.

Naval Air Station Jacksonville is a major Navy installation supporting anti-submarine warfare and logistics aircraft.