Penko,
I believe that some fairly extensive research on the effect of PEDs has been carried out. This is one document
http://"www.house.gov/transportation...ccarthy.html"] and if you search NASA AMES you should find more.
My friend has just left one company to fly for another company, at the same base. He was based with company A there for close on 17 years and returned his airside pass when he left. He now has to go through the full disclosure and search process to get an airside ID with a different company at the same airport. Can anyone explain the logic in this?