Security Clearance, rules and effects?

[QUOTE=Wendall Wagner]
Have you ever considered the possibility that your friend is simply making up his story that he handled classified information? People do such things. People also falsely claim to have combat experience in the military and to be a spy. We’ve had threads on the SDMB where we pulled apart such stories.
[/QUOTE]

Which is the purpose of the asking the question! My friend however as I said is not really the kind to make things up, but what he said seemed incredible to me. Which is why I asked and also speculated that I misunderstood him.