Virginia Tech Massacre: Who Is To Blame?

Update: 2:07 a.m.
The person to blame is the gunman (or gunmen). Human nature will make us want to blame someone. Since that animal is dead, many folks will seek someone else to blame. BUT, it's no one else's fault -- ONLY the gunman.
Don't fall prey to the inevitable pundits who today will most assuredly start to blame VT President Charles Steger, Campus Police Chief Wendell Flinchum, the Blacksburg Police Department and possibly others.