What part of "we are not actively looking for drugs" do you guys not understand? There is no way to tell if someone is carrying drugs in their bags from the xray, and when we do a bag check, we are not going into a bag with the thought of "WHERE ARE DEM DRUGGSSS????".
It's a different story if, during a bag check, we happen to see drugs. I mean, if I was going through a bag looking for water, and stumbled across some weed, I wouldn't go "hurp de derpty derp, I have no idea what that is".