What is the world coming to?

I just checked Facebook and my St. John's friends have status updates that say things like "Ailia is safe," Bridgid is okay right now and so is her sister," and "Christina is fine, and hoping all the other St. John's folks are too."  I frantically went to the Google News homepage expecting to see a top story about a St. John's bloodbath, but there was nothing.  I ran a search, and got Man with rifle arrested at St. John's.

Public Safety apprehended the guy, and locked the campus down pretty quickly.  It's great to hear that they're handling this well.  However, one of the articles I read claimed that the police fear that he may have had an accomplice.  What the hell is going on?  VATech, Delaware State, and almost St. John's?  Was this guy planning on doing anything?  Some Republican presidential candidates have been saying that if more students carried guns on campuses then shootings wouldn't happen.  I don't know what to believe.