Final answer:
The Air Operations Center (AOC) is the main agency controlling air power in direct support of land operations, overseeing U.S. armed forces including Army, Navy, Marine Corps, and Air Force.
Step-by-step explanation:
The Air Operations Center (AOC) is the primary control agency of the theater air control system for execution of air power in direct support of land operations.
The AOC is responsible for the strategic direction, planning, and execution of air operations to achieve joint force objectives.
It oversees the many elements of the U.S. armed forces, including the Army, Navy, Marine Corps, and Air Force.