page_title: Marine Air Support Squadron 4
hierarchical_section_title: Marine Air Support Squadron 4
caption_attribution_description: English: Picture taken of a Marine Air Support Squadron 4 (MASS-4) squadron patch. MASS-4 is an inactive unit of the United States Marine Corps reserve.
context_page_description: Marine Air Support Squadron 4 was a reserve United States Marine Corps aviation command and control unit that provided the Direct Air Support Center capability from 1962 through the early 1990s. MASS-4 was headquartered at Naval Air Station Los Alamitos, California, and was part of Marine Air Control Group 48 and the 4th Marine Aircraft Wing.
context_section_description: Marine Air Support Squadron 4 (MASS-4) was a reserve United States Marine Corps aviation command and control unit that provided the Direct Air Support Center (DASC) capability from 1962 through the early 1990s. MASS-4 was headquartered at Naval Air Station Los Alamitos, California, and was part of Marine Air Control Group 48 (MACG-48) and the 4th Marine Aircraft Wing (4th MAW).
caption: MASS-4 insignia
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