First, I will just clarify. I didn't say that passengers wait only 15 minutes or less. What I said was that the government-funded target service level on average is that 85% of passengers on an annualized basis will wait 15 minutes or less. We have met or exceeded that target for over six straight years.
In terms of the measurement, you're correct, the measurement should be taken at the end of the queue, the end of the line, so that you have an accurate measurement. We have, through the month of May, been working with some of our stakeholders on this to alert us. We have significant numbers of brand new screening officers whom we need to remind, in taking the measurement, that you don't stand in one spot. You have to move to the end of the queue. There is a compliance factor there.
We do oversight on compliance. That compliance is related to the performance pay that our screening contractors receive, so they have an incentive to measure correctly. We take action when there is inaccurate measuring, and it does occur, but overall the compliance rates are above 90%.