Marine Corps Base Camp Pendleton is the major West Coast base of the United States Marine Corps and is one of the largest Marine Corps bases in the United States. It is on the Southern California coast in San Diego County and is bordered by Oceanside to the south, San Clemente and Orange County to the north, Riverside County to the northeast, and Fallbrook to the east.
The United States Third Fleet is one of the numbered fleets in the United States Navy. Third Fleet's area of responsibility includes approximately fifty million square miles of the eastern and northern Pacific Ocean areas including the Bering Sea, Alaska, the Aleutian Islands, and a sector of the Arctic. Major oil and trade sea lines of communication within this area are critically important to the economic health of the United States and friendly nations throughout the Pacific Rim region.
Marine Corps Air Station Futenma or MCAS Futenma is a United States Marine Corps base located in Ginowan, Okinawa, Japan, 5 NM northeast of Naha, on the island of Okinawa. It is home to approximately 3,000 Marines of the 1st Marine Aircraft Wing and other units, and has been a U.S. military airbase since the defeat of the Japanese Imperial Army in the Battle of Okinawa in 1945. Marine Corps pilots and aircrew are assigned to the base for training and providing air support to other land and sea-based Marines in Okinawa and throughout the Asia-Pacific region. MCAS Futenma is part of the Marine Corps Installations Pacific command.
III Marine Expeditionary Force is a formation of the Marine Air-Ground Task Force of the United States Marine Corps. It is forward-deployed and able to rapidly conduct operations across the spectrum from humanitarian assistance and disaster relief (HA/DR) to amphibious assault and high-intensity combat.
Marine Wing Support Squadron 172 is an aviation support unit of the United States Marine Corps's 1st Marine Aircraft Wing. Known as the "Firebirds", they are based out of Camp Foster, Okinawa, Japan. Previously part of Marine Wing Support Group 17 before they disbanded, MWSS-172 now falls under Marine Aircraft Group 36.
Marine Air Control Squadron 1 (MACS-1) is a United States Marine Corps aviation command and control squadron. The squadron provides aerial surveillance, air traffic control, ground-controlled intercept, and aviation data-link connectivity for the I Marine Expeditionary Force. It was the first air warning squadron commissioned as part of the Marine Corps' new air warning program and is the second oldest aviation command and control unit in the Marine Corps. The squadron is based at Marine Corps Air Station Yuma and falls under Marine Air Control Group 38 and the 3rd Marine Aircraft Wing.
Marine Air Control Squadron 2 (MACS-2) is a United States Marine Corps aviation command and control squadron. The squadron provides aerial surveillance, Ground-controlled interception, and air traffic control for the II Marine Expeditionary Force. They are based at Marine Corps Air Station Cherry Point and fall under Marine Air Control Group 28 and the 2nd Marine Aircraft Wing.
The United States Marine Corps is organized within the Department of the Navy, which is led by the Secretary of the Navy (SECNAV). The most senior Marine commissioned officer is the Commandant of the Marine Corps, responsible for organizing, recruiting, training, and equipping the Marine Corps so that it is ready for operation under the command of the unified combatant commanders. The Marine Corps is organized into four principal subdivisions: Headquarters Marine Corps, the Operating Forces, the Supporting Establishment, and the Marine Forces Reserve.
The structure of the United States Navy consists of four main bodies: the Office of the Secretary of the Navy, the Office of the Chief of Naval Operations, the operating forces, and the Shore Establishment.
United States Army, Japan (USARJ) is a Major Command of the United States Army. It consists of operating port facilities and a series of logistics installations throughout Honshū and Okinawa. USARJ participates actively with the Japan Ground Self-Defense Force in bilateral training exercises and the development of bilateral plans. It commands and supports United States Army assigned units, attached units, and augmentation forces and employs these forces in support of the commander. USARJ maintains and strengthens the credibility of deterrent power in the Pacific through maintenance of defense facilities, war reserves and operational project stocks. USARJ is headquartered at Camp Zama.
The Bureau of Medicine and Surgery (BUMED) is an agency of the United States Department of the Navy that manages health care activities for the United States Navy and the United States Marine Corps. BUMED operates hospitals and other health care facilities as well as laboratories for biomedical research, and trains and manages the Navy's many staff corps related to medicine. Its headquarters is located at the Defense Health Headquarters in Fairfax County, Virginia. BUMED has 63,000 medical personnel and more than a million eligible beneficiaries.
Marine Corps Installations East (MCIEAST) is the regional authority tasked with providing support and oversight of seven United States Marine Corps installations on the East Coast.
Marine Corps Installations West is the regional authority tasked with providing support and oversight of seven United States Marine Corps installations on the West Coast.
Commander, Navy Installations Command (CNIC) is an Echelon II shore command responsible for all shore installations under the control of the United States Navy. As an Echelon II command, it reports directly to the Chief of Naval Operations. It is responsible for the operation and management of all Naval installations worldwide through eleven Navy regions.
The Marine Corps Security Force Regiment is a dedicated security and anti-terrorism unit of the United States Marine Corps. It provides security forces to guard high-value naval installations, most notably those containing nuclear vessels and weapons. It also provides Fleet Anti-terrorism Security Teams (FAST) and Recapture Tactics Teams (RTT). Marines who complete Security Forces training are assigned a secondary Military Occupational Specialty (MOS) of 8152, while instructors can earn 8153.
Joint Region Marianas' mission is to provide installation management support to all Department of Defense components and tenants through assigned regional installations on Guam and the Northern Mariana Islands in support of training in the Marianas; to act as the interface between the Department of Defense and the civilian community; to ensure compliance with all environmental laws and regulations, safety procedures, and equal opportunity policy; and perform other functions and tasks as may be assigned.
Joint Base Lewis–McChord (JBLM) is a U.S. military installation home to I Corps and 62nd Airlift Wing located 9.1 miles (14.6 km) south-southwest of Tacoma, Washington under the jurisdiction of the United States Army Joint Base Headquarters, Joint Base Lewis–McChord. The facility is an amalgamation of the United States Army's Fort Lewis and the United States Air Force's McChord Air Force Base which merged on 1 February 2010 into a Joint Base as a result of Base Realignment and Closure Commission recommendations of 2005.
The Marine Corps Installations Command (MCICOM) was created on October 1, 2011 to oversee U.S. Marine Corps installations through direct oversight, policy creation and coordination, and resource prioritization. MCICOM is currently commanded by Major General David W. Maxwell.
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United States Marine Corps 
