Thanks a bunch Matey (Touch'n'oops)! When you eventually get a job you will regret that suggestion. As you may find out, there are enough plonkers in Aviation Prevention (Security, Cleaners, Airport Operations, Loaders etc...) already. The risk to Joe Public is so small that it is not worth the effort for such a programme. A suggestion like that deserves you to be tested before you drive your car - every day, for life - because that is where the real risk is!