Not aware of VN era, but late 80's,early 90's timeframe, AS had a contract to build boats for the Navy.They were running a midnite shift at the plant ,and IIRC, it was a 19 or 20 hull.One of the supervisors was showing me the boats,they were happy to get the contract, but I did'nt get a chance to look long as we were busy and I did'nt get a chance to stop back by and check it out.
They had alot of people working ,and they had armed contract security at the gate and inside.