IG Army Inspections: what's a gig?

I'm reading my father's old letters he wrote from boot camp (in 1968) and he talks about an I.G. Inspection that went on. He says that his platoon only got one gig and the others got 2 gigs, so the company got a superior rating. So what's a gig? I know what a "gig line" is regarding uniform dress, but it... show more I'm reading my father's old letters he wrote from boot camp (in 1968) and he talks about an I.G. Inspection that went on. He says that his platoon only got one gig and the others got 2 gigs, so the company got a superior rating.

So what's a gig?

I know what a "gig line" is regarding uniform dress, but it sounds here like a gig is a negative strike or deficiency of some sort. Any help would be appreciated.
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