Originally Posted by asovse1

This is common at many (if not all) Canadian airports with US Preclearance, because the bag needs to have arrived/on its way to US federal inspection before the passenger can proceed to see a USCBP officer. The YYC holding room is on the right of the security screening area, it's a dark room (or maybe they don't turn on the lights each time I'm there) and it's roughly square with a few chairs