The controversy over Transportation Security Administration measures may peak Wednesday, one of the nation's busiest travel days annually, as a group is urging air travelers to protest at airports nationwide.Protesters are calling the day before Thanksgiving "National Opt-Out Day" and are urging travelers who are selected for full body scans using advanced imaging technology to refuse the procedure. If a large number of people refuse the full body scans, they will have to take a more time-consuming "enhanced" pat-down procedure.While the TSA says it is as prepared as possible to deal with any potential delays, a mass opt-out could snarl security lines at already-backed-up airports.As of mid-morning Wednesday, however, no major problems or delays were reported at airports because of the protest. Many air travelers took to Twitter to say they experienced no security problems.
