When you have time, I strongly suggest reading this interview transcript over on Dean’s World. It’s an interview with Lt. General H. Steven Blum, who’s in charge of the National Guard and who’s been in the thick of it since this all went down. Very informative, and corrects a lot of misconceptions and general misinformation. (For example, martial law was never actually declared anywhere, despite the fact that 2/3 of the New Orleans police force are apparently AWOL.) Why did it take four days to get to the people in the Superdome? Read it and find out.
IMHO, this piece should be running unabridged in every major newspaper this morning. This one transcript answers more questions than most of their feature-length articles.
UPDATE: More here on this same interview, and lots of comments.