I got a text from my teen at 8:52 yesterday morning. It was that text; the one you read about in news reports that usually come from the U.S. It doesn't come from one of your own children. The ones you promised yourself you would always protect. "Lockdown at school," then "Someone pulled a knife." Not much to go on, but enough to send that infamous chill down your spine. I wasn't far from school, so I raced over, my muddy dog still in the back seat, dreading what I knew I would find.