Chaffetz, who has introduced legislation to bar whole-body imaging machines as primary screening devices at airports, keyed in on that and demanded the witnesses swear under oath whether any images had ever been stored or exported. When officials said to the best of their knowledge they were unaware of that happening, Chaffetz wasn't satisfied. "Why isn't the answer to that, 'No, it doesn't even have the capability,' " Chaffetz demanded to know.