their drills and doing lockdowns between class changes. early is when students arrive. we need to defensive vears five the drills while at the same time not going overboard. we have some schools telling them to bring a can of soup to put in the desk at elementary school to throw at the gunman. we also shouldn't be doing lockdowns at 12:30 in the morning when it's convenient for adults instead of during lunch, between class changes and as students arrive. that's the time of day where we're likely to have an incident as we've seen in other cases and where we're least prepared. >> apparently, ken, there were three security-type officers inside the school at the time this went down. still this kid managed to allegedly stab 21 people. so is the real solution to put metal detectors in every school? >> no, carol. metal detectors give a quick fix for our emotional security needs. when you think about it, you'd