Another topic is the full-body scanner.
Mr. Salter, you talked about the ability of these scanners to see ceramic objects. We had evidence in the last meeting that CATSA felt that the body pat was equivalent to the full-body scan.
If you have trained personnel who are looking for identification of psychological elements or people under stress, would not the pat-down be a more effective device in determining from individuals their relative state of mind when going through a scanning system? In other words, can't human beings judge other human beings better than a machine judges human beings?
When we have two systems that we've put in place...and one may detect ceramic devices, but we heard evidence last time that the idea of knives and guns being the biggest threat anymore is gone because of the hardened cockpit doors. We're really looking for explosives now; that's really the biggest threat we have for aircraft.
What system do you think would be more effective in actually determining that?