Colombine analogy...
I was thinking along those lines and along the lines of the mailbox bomber...A highschool aged male, who got a shiney new hunting rifle for his birthday, likes to read Soldier of Fortune magazine, who was bored with target practice at the local gun range, Could not get accepted into the military, has dropped out of school, and now is on a mission to commit suicide by police bullet.
But then with the completely random nature of the attacks: A Muslim fanatic can't be ruled out.
Scott (Hoping they catch the cowardly Bastard alive)