Come to think of it, it actually makes no sense... not even to me xD , the answer is, boobs!!! Andddd, not to go off on a weird tangent, how about that first reply
Basically, everyone is preparing to leave the building since they've been found out - They're leaving to Las Vegas to go and find a girl that's linked to Humane Labs (our enemies). So they're all heading to Montreal's second garage to get their jet.