| Marine Air Control Squadron 4 | |
|---|---|
 MACS-4 Insignia | |
| Active | 5 May 1944 – 30 Apr 1947 30 Jun 1951 – 31 Jan 1971 15 Jun 1971 – present |
| Country |  United States of America |
| Branch |  United States Marine Corps |
| Type | Aviation Command & Control |
| Role | Aerial surveillance & Air traffic control |
| Part of | Marine Air Control Group 18 1st Marine Aircraft Wing |
| Garrison/HQ | Marine Corps Air Station Futenma |
| Nickname(s) | Vice Squad |
| Engagements | Vietnam War Operation Enduring Freedom |
| Commanders | |
| Current commander | LtCol L. Terrell Watts |
Marine Air Control Squadron 4 (MACS-4) is a United States Marine Corps aviation command and control squadron that provides aerial surveillance, Ground-controlled interception, and air traffic control for the III Marine Expeditionary Force. Originally formed in World War II, the squadron's most notable combat operations occurred during the Vietnam War when it was the first unit to ever use the Marine Tactical Data System. They are currently based at Marine Corps Air Station Futenma and fall under the command of Marine Air Control Group 18 and the 1st Marine Aircraft Wing.