@mark, I’d love to know your definition of air gapped.
I suspect those machines where nowhere near an internet connection.
Air gapped normally means not connected to anything unrelated.
In the dim distant past the cjx offered secure internet access at horrendous costs, it was far cheaper for connected agencies to provide their own internet access and add the necessary compensating controls. Not all systems must or should be air gapped, for some it should be mandatory though.