What is the area of responsibility (AOR) of the US Pacific Command (USPACOM)?

The area of responsibility (AOR) of the US Pacific Command (USPACOM) is indeed vast, encompassing about half of the earth's surface. This includes a diverse range of countries and regions across the Indo-Pacific, stretching from the west coast of the United States to the east coast of Africa, and from the Arctic to the Antarctic. By managing such a broad expanse, USPACOM plays a critical role in ensuring regional security, engaging in partnerships, and addressing various challenges throughout this significant geographic area.

The other options do not accurately represent the AOR of USPACOM. For example, limiting the AOR to North America or solely to the Pacific Ocean significantly underestimates the command's scope, which reaches far beyond just one ocean or continent. Similarly, saying it encompasses Europe and Asia skips over the full extent of its responsibility, particularly as USPACOM operates primarily in the Indo-Pacific region, which includes a broad array of nations and interests rather than being restricted to Europe or Asia.