Americans celebrated National Opt-Out Day in relative quiet on Wednesday, partaking peacefully in the traditional running of the airport security line, even when that tradition included full-body scans and pat-downs. The Web-driven protest campaign encouraging holiday fliers to opt out of the body scanners and choose the more time-consuming and physical pat-downs passed largely unobserved in key airports around the country. Lines moved fairly quickly at security checkpoints, passengers generally refrained from complaint, and the chaos and congestion anticipated by many in the news media and feared by many travelers did not materialize. As for the new security measures, travelers for the most part accepted them with resignation or indifference. 'We've had 10 years to be desensitized; I'm not sure why people are freaking out now,' said Dr. Janice Manjuck, 50, a physician from San Francisco who was traveling with her husband and 11-year-old son, to Norfolk, Va. Manjuck said she doubted the efficacy of the pat-downs and body scanners, but did not particularly object to them. 'We're from San Francisco, so we're used to nudity,' she said. Others considered them a necessary inconvenience in the name of security. 'If it's going to keep me and others safe, I'm all for it,' said the Rev. George Oberle, a Lutheran minister who said he had gladly submitted his body for a scan on his way to New York from Detroit. 'I'm 50,' he said. 'I'm proud of what I've got.' There were a handful of protests, small groups of people handing out leaflets, reading aloud from the Constitution or wearing signs that riffed profanely on the abbreviations for the Transportation Security Administration and Department of Homeland Security. A man walked around a terminal in the Salt Lake City airport wearing only a swimsuit, boots and a cap. According to a blog operated by the security agency, 39 people had opted out of the body scans in Atlanta by 5 p.m. In Los Angeles, 113 had. One had opted out in Charlotte, N.C. Boston seemed to have something of a mini-spike, with 300. The blog said that even in Boston, the number of people opting out made up less than 1 percent of all travelers screened. It did not say, however, how many people had been selected for the scanners and how many had gone through traditional metal detectors and thus were not given a choice. Some flyers did express concerns about the new security measures, but their objections were mixed. Nicole Chardavoyne, a public relations professional making her way through Ronald Reagan National Airport in Washington, said she thought the full-body scanners were fine, but found the pat-downs to be embarrassing and invasive. Seetha Lath, a 71-year-old in Los Angeles on the way to visit grandchildren, said that she was not against the pat-downs, but that she worried about radiation in the scanners. Even if protests did not materialize in any significant numbers, the fact that people were discussing the issue at all meant the campaign had succeeded, said Brian Sodergren, a pharmaceutical executive in Virginia who originated the idea of National Opt-Out Day. 'For me, the outcome has probably been achieved,' he said Monday. 'There has been more attention given to this than I could ever imagine.' Sodergren said that he had no intention of promoting chaos on one of the busiest travel days of the year, and that he just wanted to raise questions about the safety, effectiveness and invasiveness of the body scans and pat-downs. But some fliers said the campaign was misguided, and defended the security measures on the basis of national security. 'We've got terrorists coming over wearing explosives in their clothing,' said Jason Moody, a 34-year-old X-ray technician in the Army, who was reading a novel during a layover in San Francisco. 'The TSA did not just dream this up.' Officials from several airlines said they had seen no indication that people were canceling flights or had decided not to travel because of security concerns or worries about protests. The number of flights was typical for the day before Thanksgiving, they said, even though security lines appeared to be moving more smoothly than usual. 'It appears to be a non-issue from our vantage point,' said Ned Raynolds, the Northeast manager of corporate communications for American Airlines. The extensive news media coverage beforehand, and the promise of gatherings around the country organized through websites like We Won't Fly, seemed to foretell a little more chaos than actually occurred. The protesters were often outnumbered by journalists, in some airports by a ratio of more than three to one. Joe Murphy, 76, a retired consultant who was flying to Washington, was not impressed. 'Protesters?' he asked. 'There were more people selling tickets to my grandson's high school football game.' 