The unsound thought that crossed my mind in T5 4 weeks ago was that if Profiling were ever introduced, and done properly, all the security staff would be selected for the exercise well before any of the passengers around at that time.
But we are not allowed to say such dreadful things, and so my lips are sealed.
I'm sure that they are recruited and checked out by BAA with enormous care, with a thorough investigation into every single person's background, rather like the MoD Positive Vetting process which took 6 months when I was PV'd. After all, I have worked for BAA and so I should know.
If not, the whole process would be rather futile, wouldn't it?