BRIAN STELTER, RELIABLE SOURCES, CNN: He addressed what he said on air last week, but didn't address these other cases, like on the David Letterman show in 2013, so it was a half-way measure, it wasn't going all the way, and he is not addressing why people say he is lying about this, as opposed to making a mistake.
Sixty seconds on the NBC Nightly News is probably not going to be enough to fully address this. One of the most important news anchors in our country -- the single most-watched news broadcast in our country. Trust and credibility is key here. Brian Williams has a lot of it,he has earned it over so many years, but this is a serious blow.