They were based out of Marine Corps Air Ground Combat Center Twentynine Palms, California.

[1] MWSS-374 was officially deactivated on 31 March 2022, at Marine Corp Air Ground Combat Center,(MCAGCC) 29 Palms,Ca.

In March 1977, General Louis H. Wilson, the 26th Commandant of the Marine Corps, activated the Expeditionary Airfield (EAF).

On 4 March 1993, MWSS-173 was deactivated and Aviation Ground Support Element (AGSE) was activated to continue operating and maintaining the EAF.

Currently the squadron is nearly 525 strong, and possesses the ability to operate a portable and tactical airfield including and maintaining ground support equipment for aircraft.