the shootings are sparking discussions about the best way to keep children safe at school. many schools around the nation are conducting standard security drills after the 1999 shooting in columbine but now some officials say it may be time to update those procedures. joining us now is dr. sony shepherd, safety analyst at safe haven international. great to see you. good morning. i would like to say our thoughts and prayers are with the town in connecticut and we re just horrified by that tragedy. it s just you can t even imagine what those families must be going through. and maybe we re going a step too far here being a little bit selfish in talking about how to keep our own kids safe but we hope to learn something from this. you were very kind in sending me a white paper to read about this. i find this interesting, it s called fight, flight, or