David, I've been through two real lockdowns, and I'm going to say the hard thing: the phones made both worse. Kids texting rumors that outran the facts, ringtones in silent rooms, and 400 parents arriving at a sealed building mid-incident. Every safety officer who's briefed us says the same: eyes on the adult, not the screen. I carry your fear too — I just don't think the phone answers it.
— ms.harmon