[nacnud]

Only a guess, but at that time wasn't the GPS signal intentionally degraded for non-US-military use, with reduced accuracy? Perhaps they're talking about the more precise signal, which the US didn't let them use.

[andyjohnson0]

Yes, "selective availability" was still in use then - but I can't see how its use or not would disclose a GPS user's position.

[Arnt]

"I need a missile strike. My position according to GPS is x and the Pakistani you should hit are 920m straight north of me according to my rangefinder."