H&MS-16, Tustin, CA. : HMH-363

**H&MS-16 (Headquarters & Maintenance Squadron 16)** was a United States Marine Corps aviation support unit based at Marine Corps Air Station Tustin, California. Activated during the Vietnam era, H&MS-16 provided essential maintenance, supply, and logistical support to Marine helicopter squadrons, ensuring operational readiness for aircraft and crews. One of the squadrons it supported was **HMH-363 (Marine Heavy Helicopter Squadron 363)**, known as the "Lucky Red Lions." HMH-363 operated CH-53 Sea Stallion helicopters and participated in combat and humanitarian missions in Vietnam and later global deployments, continuing its legacy of excellence in heavy-lift helicopter operations. Both units contributed significantly to Marine Corps aviation capabilities during their years of service at MCAS Tustin.