On the increases in the charge, there have been discussions I believe between Transport Canada and the security agencies regarding new security measures and what's required. A lot of the security measures are international in context. In order to fly into a foreign airports, those airports require some sort of clearing, and there are agreements before they will allow you in. So they require some sort of screening, some level of screening, before they'll allow you to land. For example, after certain events, there is an increase in the level of screening and of the expectations of the screening that will be done on foreign flights going into some countries. So you have to provide that level of screening in order to enter into those other countries.
On April 22nd, 2010. See this statement in context.