Norad does a fine job tracking Santa -- Sometime around 1979, our rock mechanics graduate students visited the Norad facilities to look at the rock. Norad is located deep underground at an undisclosed location somewhere in Canada. :)
The great thing was that they were terrified of replacing their tube computers, with something using transistors. There were two computers, each taking up the space of a huge room. Everyday, the technicians would switch and over-volt one. Tubes that blew out would be replaced. The remaining tubes would last a whole day. The replacement standing in the wings was the size of a washing machine.