[Waverunner]

And Annapolis stopped teaching celestial navigation because GPS rendered it obsolete.. ( exception: near North Korea).

[BobL]

“And Annapolis stopped teaching celestial navigation because GPS rendered it obsolete.. ( exception: near North Korea).”

I read this AFTER my post. LOL. What they also cannot seem to consider is that WE may shut off GPS, particularly if incoming (enemy) missiles are using it to zero in to their targets.