What is the primary MAJCOM that provides combat AirPower to the U.S. war fighting commands?

The primary Major Command (MAJCOM) responsible for providing combat AirPower to the U.S. war fighting commands is Air Combat Command. This command oversees the majority of the Air Force's combat forces, which includes fighter, bomber, reconnaissance, battle management, and other combat-ready units.

Air Combat Command plays a crucial role in ensuring the U.S. military maintains a superior air capability for various operations, whether in conventional warfare, counter-insurgency, or humanitarian assistance missions. The command's focus is specifically on combat readiness, making it integral to the effective deployment of airpower in support of joint operations.

The other options, while they serve important roles within the Air Force, do not primarily focus on combat airpower delivery to war fighting commands. Air Mobility Command is centered on air mobility and logistics operations, Airlift Command pertains to transporting troops and cargo, and Space Command focuses on operations in space rather than air combat. Thus, the selection of Air Combat Command reflects its primary mission and capabilities in direct support of combat operations.