S/SU/AC means Systems/ Systems Upgrades and Advanced Concepts in Military
Similar to S/SU/AC
772EOD - 722nd Ordnance Company7CAV - 7th Cavalry Regiment the Michigan Seventh
81 IR ILL - 81mm Mortar Infrared Illumination Round
82AD - 82nd Airborne Division
8A - Minority-owned or other Disadvantaged Business
8AF - 8th Air Force
920RQG - 920th Rescue Group
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