department tweeting a short time ago that they're looking for someone male, asian suspect, black clothing last scene at the location, deputies on scene, still responding again. jim, in cases like this, and i know it's difficult, but in cases like this typically, the shooter or shooters, are they someone known previously to law enforceme enforcement? >> it's a mixed bag. sometimes these people are known to law enforcement, or school administrators -- have these people had trouble with the administration of the school or law enforcement. oftentimes if it's students, it's someone who might not have attended class that day, be