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Greyhawks established January 15, 1961
1951 - Marine Helicopter Transport Squadron 161 (HMR-161)
1956 - Marine Helicopter Transport Squadron (Light) 161
1962 - Marine Medium Helicopter Squadron 161 (HMM-161)
On 2009 with the transition to the MV-22 Osprey became VMM-161
1951 - Marine Helicopter Transport Squadron 161 (HMR-161)
1956 - Marine Helicopter Transport Squadron (Light) 161
1962 - Marine Medium Helicopter Squadron 161 (HMM-161)
On 2009 with the transition to the MV-22 Osprey became VMM-161
This unit was located at MCAS Santa Ana/Tustin until moving to MCAS El Toro in 1995 not 1997. They were the first unit to transition to El Toro from Tustin after their 94/95 west pac deployment aboard the USS Essex (LHD2) 
News of Marine Medium Helicopter Squadron 161 | |
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Locations | |
| Years | Location | ICAO/FAA |
| 1999/09 | MCAS Miramar  | KNKX |
| 1995/99 | MCAS El Toro | KNZJ |
| 1970/95 | MCAS Santa Ana / Tustin  | KNTK |
| 1966/68 | MCAS New River | KNCA |
| 1966 |  MCAS Futenma | ROTM |
| 1955/66 | MCAS Kaneohe Bay | PHNG |
| 1951/55 | MCAS El Toro | KNZJ |
| 1951 | MCAS Santa Ana / Tustin | KNTK |
Models | Login to Edit | |
| Years | Models | |
| 1966/09 | 107M H-46 Sea Knight | |
| 1960/66 | S-58 H-34 | |
| 1951/60 | S-55 H-19 | |