This point to me is the objectionable basis of TSA and aviation screening in the United States. We are all treated as suspects and treated like criminals for merely trying to board an airliner. Rather than allocating resources to more intensive screening of those far more likely to be terrorists, TSA spends time and our tax money on secondary searches of "threats" such as Roman Catholic sisters, grandmothers from Des Moines, and children. Unless these individuals exhibit behavior that satisfies Terry, a stop and frisk is unconstitutional. By the reasoning used to justify TSA procedures, anyone entering a national governent building would be subject to a stop and frisk. For that matter, because armed robberies occur at banks, anyone entering a bank would be subject to a stop and frisk. The Founding Fathers did not draft the Constitution and Bill of Rights to give the state the power to stop and search people who did not exhibit indicia of involvement in crime. Read the Fourth Amendment.