Hug your kids...again
Don't know how far-reaching the news was, but if you heard about the suburban-Philly high school where a student committed suicide with an AK-47 today, it was our little high school, where my younger daughter is a freshman (and, had she been a little more efficient in post-first-period organization, would have been out in the hall, right in the middle of the action).
She was not in physical danger, but like us is still very shaken. Hug your kids, pets, significant others, whoever tonight. Talk to them. Listen to them. And hope and pray that those who are troubled, with themselves or others, seek another solution than at the end of a gun, particularly one that has no business being privately-owned.