A few weeks ago, a swab test of Contrarian's laptop at Stanfield International Airport registered traces of nitroglycerin, leading to an additional interview and a 95% thorough physical pat-down. Details here. The Canadian Air Traffic Safety Agency (CATSA) has apologized in writing to a Winnipeg-based human-rights activist for a similar incident. A swab test of Ali Saeed's hands - not his laptop - turned up traces of trinitrotoluene, or TNT. After questioning, Saeed was permitted to board his flight for Denver. His return flight was uneventful. Regular readers will know that Contrarian detests many aspects of airport security. Recent air travel through...