"newshour" correspondent tom bearden has our report. the day before thanksgiving-- the busiest travel day of the year. and this year, there was the potential for the traditionally long lines to stretch even longer, because of a loosely- organized protest dubbed "national opt-out day." some travelers said they would express their displeasure with the security measures by requesting enhanced pat-downs rather than go through scanners with advanced imaging technology. the transportation security administration estimated earl this afternoon that approximately 1% of passengers were opting out of the scanners. the pat-downs can take four minutes or longer. the scanners-- as little as 10 seconds. and, on abc this morning, t.s.a. administrator john pistole warned the protest could cause problems. >> obviously, there's some unknowns in terms of how many people may decide to protest and that's one of the variables we are prepared to deal with. but the bottom line is that if a number of people protest at a particular check point it will definitely