[doorgunner69]

(.... THINKING: What will happen when they have to park them under bomb-proof shelters in caves, then be ready to launch quickly?)

GPS repeaters inside the shelter keeps the fix current. Receive the signal outside, route it to antennas in the shelter, re-radiate. I started doing those systems 12 years or more ago.

[Robert A Cook PE]

I've seen them as well for the F-117. But that's what I mean by becoming excessively reliant on tech.

Previously, the location was painted on the floor in numbers for certain hangers