Bush wore a device during debate according to NASA

Oct 29, 2004 | George W. Bush tried to laugh off the bulge. "I don't know what that is," he said on "Good Morning America" on Wednesday, referring to the infamous protrusion beneath his jacket during the presidential debates. "I'm embarrassed to say it's a poorly tailored shirt."

Dr. Robert M. Nelson, however, was not laughing. He knew the president was not telling the truth. And Nelson is neither conspiracy theorist nor midnight blogger. He's a senior research scientist for NASA and for Caltech's Jet Propulsion Laboratory, and an international authority on image analysis.

For the past week, while at home, using his own
computers, and off the clock at Caltech and NASA, Nelson has been
analyzing images of the president's back during the debates. A
professional physicist and photo analyst for more than 30 years, he
speaks earnestly and thoughtfully about his subject. "I am willing to
stake my scientific reputation to the statement that Bush was wearing
something under his jacket during the debate," he says. "This is not
about a bad suit. And there's no way the bulge can be described as a
wrinkled shirt."