Well, it appears that Mr. Williams has quite a serious problem.
In the past few days, anywhere from five to eight incidents of " Lyin' Brian" having dramatically embellished reality have been mentioned by different sources.
The NJ Xmas tree holdup story is quite amusing.
But this more recent Katrina tale appears to be more damaging.
http://www.washingtonpost.com/news/morning-mix/wp/2015/02/10/brian-williams-perhaps-misremembered-floating-dead-body-and-gangs-during-katrina-hotel-manager-says/
It appears that Mr. Williams is afflicted with some type of psychological disorder.
Looks like Savannah Guthrie is going to get his job.
Ten million dollars per year up in smoke!