Ron Natalie wrote:
Dave S wrote:

Avweb's Don Brown talked in one of his columns (Maiden And Me... I
believe it was) about how the ATC computers every once in a while just
sprout ghosts and clones.. wouldn't it be interesting if this was
actually the case?

Not ATC's computers involved here.

Where do you think the Secret Service is getting its data feed from,
with regards to "identified aircraft" and wether its a squawking a code
or not? I don't know for a fact, but my money is on a data link from
Washington/baltimore Approach (or whatever they call themselves)

Dave