| Marine Unmanned Aerial Vehicle Squadron 4 | |
|---|---|
 VMU-4 squadron insignia | |
| Active |
As VMO-4:
|
| Country | United States of America |
| Branch |  United States Marine Corps |
| Type | Aerial reconnaissance |
| Role | Reconnaissance, Surveillance, and Target Acquisition |
| Size | TBD |
| Part of | MAG-41, 4th MAW |
| Garrison/HQ | Marine Corps Air Station Camp Pendleton |
| Nickname(s) | Evil Eyes |
| Tail Codes | 7Y(1st) 5Y(2nd) MU(3rd) |
| Engagements | Battle of Saipan Battle of Iwo Jima |
| Aircraft flown | |
| Multirole helicopter | SH-34G/J Sea Bat |
| Reconnaissance | OY-1 Grasshopper OV-10 Bronco RQ-7B Shadow |
Marine Unmanned Aerial Vehicle Squadron 4 (VMU-4) is an unmanned aerial vehicle (UAV) squadron in the United States Marine Corps that operates the RQ-21 Blackjack. It is the fourth UAV squadron in the Marine Corps and the first in the reserve component. The squadron, nicknamed the "Evil Eyes", entered the force structure on 1 July 2010, when Marine Observation Squadron 4 (VMO-4) was reactivated and redesignated VMU-4.
The squadron inherited the history of VMO-4 which was an observation squadron that saw extensive action during World War II. They were last based at Naval Air Station Atlanta near Atlanta, Georgia and were deactivated on 23 May 1993 as part of the post-Cold War drawdown of forces. VMU-4 is a subordinate unit of Marine Aircraft Group 41 and the 4th Marine Aircraft Wing.