from
link, see post #2 by Ambrose...
Last week, Knox said she had no firsthand knowledge of Bush's time with the Texas Air National Guard, although she did recall a culture of special treatment for the sons of prominent people, such as Bush and others.
...
Knox said last week she had not seen the disputed documents obtained by CBS, butwas reacting to news reports challenging their authenticity, primarily by countering claims that Killian did not keep copies.
see article
This has been conveniently left out of many articles.