Final answer:
The Department of Defense is responsible for providing planning, programming, and budgeting for manpower and training resources to support fleet training requirements.
Step-by-step explanation:
The organization responsible for providing necessary planning, programming, and budgeting for manpower and training resources to support fleet training requirements is the Department of Defense. The Department of Defense oversees the different branches of the U.S. armed forces, including the Army, Navy, Marine Corps, and Air Force. They are responsible for developing strategies, allocating resources, and ensuring the readiness of the military forces.