Go in quickly and end it. On a positive note...if he is alone there is no other personality on which to feed. Which was the case @ Columbine.
A handgun-toting student is holding 23 classmates and a teacher hostage inside a room at a northeast Wisconsin high school, police said Monday night.
http://www.cnn.com/2010/CRIME/11/29/...ostage/?hpt=T2