5 Dec
2014
5 Dec
'14
1:05 p.m.
On GPS, I was recently told by someone of authority.......can't remember who.........that the US Navy had gone all in for GPS and was no longer teaching it's navigation officers celestial navigation. If so, I would be shocked. While they may have redundant backup systems on board, none of those would work if some rogue nation figures out a way to disable the GPS birds. Can anyone confirm or deny this?