Marine Air Control Squadron 4 (MACS-4) is a United States Marine Corps aviation command and control unit that was originally activated during World War II in 1944. The squadron has a storied history, providing air surveillance, air traffic control, and air defense capabilities in support of Marine Corps operations. MACS-4 played significant roles during the Korean War, Vietnam War, and has participated in numerous exercises and operations throughout the Asia-Pacific region. Today, MACS-4 remains a key component of the 1st Marine Aircraft Wing, supporting expeditionary air operations and enhancing the Corps' ability to control the battlespace.
