In addition, on Saturday, the Dallas Morning News reported that one of the officers who allegedly pushed to clean up Bush's record in August 1973 had, in fact, retired 18 months earlier, on March 1, 1972 .

The "60 Minutes" report relied on a memo from Col. Walter "Buck" Staudt, former commander of the Texas Guard, which allegedly pressured another officer to "sugar coat" Bush's record. But the paper reports that Staudt was long gone by the time the memo was supposed to have been written.

CBS News responded to news reports questioning the documents in its Saturday evening broadcast, and issued a statement on its Web site.

"We believed General Hodges the first time we spoke with him. We believe the documents to be genuine. We stand by our story and will continue to report on it," the network states.

CBS has now spoken out twice since it came under fire this week that the documents used in its report are forgeries. In its Web report, the network listed several arguments about the authenticity of the papers…

However, document examiner Sandra Ramsey Lines of Paradise Valley, Ariz., who examined the documents for the Associated Press, told the news agency that she was "virtually certain" the papers were generated by computer.

Lines said that meant she could testify in court beyond a reasonable doubt that her opinion was that the memos were written on a computer…

Retired Col. Maurice Udell, the unit's instructor pilot who helped train Bush, said Friday he thought the documents were fake.

"I completely am disgusted with this [report] I saw on '60 Minutes,'"
Udell said. "That's not true. I was there. I knew Jerry Killian. I went to Vietnam with Jerry Killian in 1968."