Its commander, the senior U.S. military officer in the Pacific, is responsible for more than 375,000 service members as well as an area that encompasses more than 100 million square miles (260,000,000 km2), or roughly 52 percent of the Earth's surface, stretching from the waters of the West Coast of the United States to the east coast maritime borderline waters of India at the meridian 66° longitude east of Greenwich and from the Arctic to the Antarctic.

With allies and partners, we will enhance stability in the Indo-Asia-Pacific region by promoting security cooperation, encouraging peaceful development, responding to contingencies, deterring aggression, and, when necessary, fighting to win.

Consequently, we will remain an engaged and trusted partner committed to preserving the security, stability, and freedom upon which enduring prosperity in the Indo-Asia-Pacific region depends.

[10]USINDOPACOM's Area of Responsibility (AOR) encompasses the Pacific Ocean from Antarctica at 92°W, north to 8°N, west to 112°W, northwest to 50°N/142°W, west to 170°E, north to 53°N, northeast to 62°30'N/175°W, north to 64°45'N/175°W, south along the Russian territorial waters to the People's Republic of China, Mongolia, the Democratic People's Republic of Korea, the Republic of Korea, and Japan; the countries of Southeast Asia and the southern Asian landmass to the western border of India; the Indian Ocean east and south of the line from the India coastal border west to 68°E, south along 68°E to Antarctica; Australia; New Zealand; Antarctica, and Hawaii.

Signal carriers allow people to block alerts from state and law enforcement agencies, but not those issued by the President.

And as part of the 2020 National Defense Authorization Act, the role of issuing warnings of a missile threat would lie with the Federal Government, as opposed to individual states.

The authority of the POA Commander-in-Chief (CINCPOA) was technically separate from that of the Commander in Chief, Pacific Fleet (CINCPAC), but Admiral Nimitz was assigned to both positions and bore the title CINCPAC/CINCPOA.

Then-PACOM's original AOR ranged from Burma and the eastern Indian Ocean to the west coast of the Americas.

Following a 1949 review of missions and deployments of U.S. forces, the Joint Chiefs of Staff revised the Unified Command Plan on 16 February 1950.

The outbreak of the Korean War and subsequent developments in the Far East tested the U.S. unified command structure in the Pacific.

With CINCFE focused on combat operations during the Korean War, the Joint Chiefs of Staff, over strong objection from FECOM, transferred the Mariana, Bonin and Volcano Islands to PACOM.

ALCOM would remain as a unified command because of its strategic location, retaining its mission for the ground defense of the Alaskan region.

The JCS, therefore, believed that the divided command structure in the Pacific should be abolished and FECOM's responsibility reassigned to PACOM.

A subsequent outline plan to disestablish FECOM and transfer its responsibilities was approved by SECDEF and the JCS effective 1 July 1957.

Control of B-52s employed to conduct airstrikes against targets in South Vietnam remained under the Strategic Air Command.

On 26 June 1989, Secretary of Defense Dick Cheney endorsed the recommendation from the Joint Chiefs of Staff to reassign the Gulfs of Aden and Oman from USPACOM to USCENTCOM's AOR.

Secretary Rumsfeld also approved the assignment of responsibility for Russia to EUCOM with USPACOM in a supporting role for the Siberia and Russian Far East.

Later reassignments under the 2004 and 2006 plans placed the entire Seychelles Archipelago in the USCENTCOM's AOR and extended U.S. Northern Command (USNORTHCOM)'s boundary westward to encompass all of the Aleutian Islands, respectively.

On 24 October 2002, the Secretary issued a memorandum declaring that the title "Commander in Chief" should only refer to the President of the United States.

"[18] U.S. officials stated that the change was instituted to "better reflect the command's areas of responsibility, which includes 36 nations as well as both the Pacific and Indian Oceans.