It is terrible but at least there is some sort of closure at this point. One of the suspects was killed by law enforcement and the second is in custody. What really saddens me is that at the heart of all these tragedies (Columbine, Newtown, Aurora, Boston, etc) is someone who felt excluded from the group in some way. Whether it was because they were immigrants, geeks, overweight or whatever, they all felt like they didn't matter. When will we get to the true heart of the problem?