Has any thought been given to the disparity in altitude
between spy camera satellites and the GPS constellation?

SNIP


Working with the speed of light(LASER)it probably does not
matter that much.

If the Chinese can hit a spy satellite I am sure they can
figure out a way to zap a GPS bird. If not right now soon in
the future.

America should establish a good solid VOR/DME back up
network on the ground hardened for EMP attacks with back up
power and redundancy.

The FAA as always is walking backwards with their future
planning and right now are looking at decommissioning ground
based navaid's soon.

That is just stupid