There were 3 generations of Nike missiles - Nike Ajax, Nike Hercules, and Nike Zeus. The Ajax was conventional HE, the Hercules and Zeus could be armed with conventional high explosive or nuclear warheads. All were taken out of US service in mid 70s, some other countries kept them a little longer. I don't expect any nukes were live fired over US.
In the mid 80s I had an additional duty as the OIC of the ammunition storage area at FT Greely, I had one storage building that the sole occupant was a case of 10 Nike Hercules safe and arming devices for the nuclear version. Pain in the butt due to surety program and classification. They were hold over from an old storage test program, every time we tried to get rid of them the answer was "hold on to them pending possible foreign sale".
Last edited by MikeL2; 11/17/20.