Mr. Speaker, let me help the hon. colleague with some facts. We have multi-layered approach when it comes to airport security. In that layered approach, some of those are visible and some of those are invisible. When it comes to the scanners that he talks about, they are much more effective when it comes to liquid explosives than the metal detectors that are currently in many of the airports.
In the House of Commons on April 26th, 2010. See this statement in context.