As if air travel over the Thanksgiving holiday isn't tough enough, it could be even worse this year: Airports could see even more disruptions because of a loosely organized Internet boycott of full-body scans.
Even if only a small percentage of passengers participate, experts say it could mean longer lines, bigger delays and hotter tempers.
The protest, National Opt-Out Day, is scheduled for Wednesday to coincide with the busiest travel day of the year.
"Just one or two recalcitrant passengers at an airport is all it takes to cause huge delays," said Paul Ruden, a spokesman for the American Society of Travel Agents, which has warned its more than 8,000 members about delays resulting from the body-scanner boycott.
"It doesn't take much to mess things up anyway - especially if someone purposely tries to mess it up."