[RobFromGa]

What would be affected if we scrambled the signal for a few hours? Any life threatening consequences?

We could react pretty quickly to a launch (or the first hit) if necessary.

[Ides of March]

Get ready for the return to GPS "Selective Availability".

[Beck_isright]

"What would be affected if we scrambled the signal for a few hours? Any life threatening consequences?"

Yes if it's during battle as our Rangers, Seals and recon depend on it heavily. I say if they do it, nuke Baghdad and be done with this mess. Make an example of the cockroaches.

[MPB]

What would be affected if we scrambled the signal for a few hours? Any life threatening consequences?

Nothing life threatening I can think of, but bear in mind that alot of OTR freight and ocean-going vessels use GPS as a primary means of navigation (ocean-going of course have other systems for nav.)

Not to mention geeks like myself with GPS in our cars for finding our way around the country, or those who use them while hiking to keep track of their location.

[spodefly]

What would be affected if we scrambled the signal for a few hours? Any life threatening consequences?

GPS is being used in General and Commercial Aviation, so it might be very disruptive and potentially dangerous to scramble the signals.

BTW, I believe this story is at least overblown, if not total fantasy. How on earth would they get something like that across our borders? (that is sarcasm, in case anyone missed it.)

[Aeronaut]

What would be affected if we scrambled the signal for a few hours? Any life threatening consequences?

A lot of airplanes use GPS as primary navigation.