What does NASU stand for?

Nashua Manufacturing Company - NCIC trailer make code

Nassau Leasing - Intermodal shipping container symbol (TVRC)

National Adult School Union - British (DAS)

National Association of State Universities - Later, NASULGC

National Association of System 3 Users (IAA)

Navy Air Support Unit

Navy Underwater Sound Laboratory (MUGU)

North American Singers Union (EA)