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The "Hammerheads" were activated in 1994 and deactivated 1 October 2000. They were assigned to the 1st Marine Aircraft Wing Aviation Support Element Kaneohe and operated the CH-53D.
The squadron nickname and insignia was taken from the hammerhead sharks that inhabit the area.
HMH-366 was reactivated 30 September 2008 at MCAS Cherry Point, NC, and is assigned to MAG-29. The squadron will retain the "Hammerhead" nickname, and will operate the CH-53E "Super Stallion".
Activated 10 September 1994 at Marine Corps Base Hawaii, as MARINE HEAVY HELICOPTER SQUADRON 366 (HMH-366).
Deactivated 1 October 2000.
Reactivated 30 September 2008 at MCAS Cherry Point, and assigned to Marine Aircraft Group 29.
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