CBS Local Denver: Major Change Coming To The Security Lines At DIA (June 29 2013) TSA confirms it is using canines to pre-screen passengers and if they pass they may be able to go through an expedited security line ... “What are we looking for? We’re looking for things that go boom. The dog takes care of that very, very effectively, and the rest of this is finding pointy objects,” aviation expert Mike Boyd said. As effectively as your Nude-O-Scopes find weapons? How many of these dogs a cross-trained to find drugs and cash, which would an unconstitutional search under those circumstances?