http://cnews.canoe.ca/CNEWS/World/20.../20486771.html
"A student armed with a 12-gauge shotgun opened fire in a California high school on Thursday, critically wounding a fellow student before two staff members talked the boy into putting down his weapon, authorities said."
"An armed police officer is normally assigned to Taft Union High School but was not able to make it to work on Thursday because of snow on the roads, Youngblood said."
It looks like he was targeting 2 fellow students & them only although he had plenty of ammo.