Final answer:
The United States Navy's 3rd Fleet's AOR includes the eastern and northern Pacific, headquartered in San Diego, California, and the 7th Fleet covers the Western Pacific and Indian Ocean, with headquarters in Yokosuka, Japan.
Step-by-step explanation:
The 3rd and 7th Fleets are two of the numbered fleets in the United States Navy, each with their own specific Area of Responsibility (AOR). The 3rd Fleet’s AOR encompasses approximately 50 million square miles of the eastern and northern Pacific Ocean, including the Bering Sea, Alaska, the Aleutian Islands, and a sector of the Arctic. Its headquarters is based out of San Diego, California.
The 7th Fleet, on the other hand, has its AOR in the Western Pacific and Indian Ocean, which covers more than 124 million square miles extending from the International Date Line to the India/Pakistan border, and from the Kuril Islands in the north to the Antarctic in the south. The 7th Fleet’s headquarters is located at U.S. Fleet Activities Yokosuka, in Yokosuka, Japan. Both of these fleets play critical roles in naval operations and maintain a ready presence to conduct a broad range of operations in support of U.S. interests in their respective regions.