It's saying something when a news organization is so easily satisfied with what were obvious forgeries.
There was a great deal of coroborating [sic] evidence from people in a position to know.
And there was a great deal of conflicting evidence from people in a position to know, e.g. document experts, Killian's family, Killian's co-workers, which you failed to mention. How do you explain that?
First, the folks at CBS are total partisans and could care less about the truth. For purposes of the more intelligent discussion that takes place here: There is a huge difference between a couple of questionable characters saying inflammatory things about a president (which is all CBS really had) and a story claiming to be presenting documentary evidence proving those otherwise questionable characters are telling the God's honest truth.