604th MASS

• Origins: The 604th Military Airlift Support Squadron (MASS) was activated as part of the Military Airlift Command to provide essential ground and air support for military airlift operations. • Location: The 604th MASS was based at Yokota Air Base in Japan, serving as a critical logistics and support hub for U.S. Air Force operations throughout the Pacific region. • Vietnam War Support: During the Vietnam War, the 604th MASS played a vital role in supporting airlift missions, ensuring that troops and supplies reached forward operating bases in Southeast Asia. • Aircraft Handling: The unit specialized in ground handling and servicing of various large transport aircraft, including the C-141 Starlifter, C-5 Galaxy, and C-130 Hercules. • Humanitarian Missions: The 604th MASS was frequently tasked with supporting humanitarian relief operations, such as delivering aid following natural disasters in the Pacific. • Distinguished Unit: The 604th MASS earned several commendations and awards for its outstanding service and support during both peacetime and conflict. • 24/7 Operations: The unit maintained round-the-clock readiness, with personnel on call to support urgent and unplanned missions at a moment’s notice. • Transition and Legacy: With changes in the Air Force’s organizational structure, the 604th MASS eventually inactivated, but its legacy continues in the modern air mobility support squadrons. • International Cooperation: The squadron often worked closely with Japanese Self Defense Forces and allied military units, strengthening international military partnerships. • Veterans’ Stories: Former members of the 604th MASS recall the camaraderie, challenges of operating in a high-tempo environment, and the pride of ensuring mission success for aircrews and ground personnel alike.