You don't know what they are looking for. You don't know what alerts they are under. You don't know what directions they have been given by the government or CSIS or the FBI. YOu don't know if they are doing a routine check for various things like produce in baggage. BUT you presume to know how to do their job. It seems to me they aren't the a**hats. You just don't know anything about the intelligence and orders they are working under AND it's non of your business.