As seen in this video: http://www.youtube.com/watch?feature=player_embedded&v=Km0awE1Q2HA
A TSA Freeze drill occurs when the TSA agents walk airport terminals and command all persons inside to stop and stand still. Freeze drills have done nothing to improve security, and they are a blatant demonstration of a government agency exerting its "power" over a free people. This practice must end.