Who blocks and confirms the BP of people who know how to airport. Bored CBSA agents. A pair of Pearson staff processing parties one at a time, conferencing between themselves to confirm access, right after the guys with guns, blocking access for people who know how to airport. And then a third airport goon, blocking access to the escelators, scanning boarding passes, while dressed less professionally then an undercover retail loss prevention guy, blocking access for people who know how to airport. And then the bus cosplaying as a sardine can.

This manages to be superior to the traditional process, however.