mary: dan linsky is a security expert and retired superintendent chief of the boston police. he says everyone needs to have a plan, and be ready to respond. this video found on dept of homeland security website shows a workplace scenerio, but the rules are the same regardless of the targeted location. if you can get out, do. always try to escape or evacuate. mary if you can't get out, then : you need to hide, barricade yourself in a safe place, and get quiet. the final part of the plan, fight, only as a last resort, but you need to be ready. >> it can go as you can go and download the video. you should make yourself aware. you should make your children aware. this is a conversation that families should be having with kids. mary it was just 10 days ago : that police descended upon the gunman that wound up being a hoax. but linsky predicts the coordinated response did not go unnoticed by real would-be attackers looking for an easy target. >> if you have good countermeasures, good training, good personnel, good response policies, they will go someplace else. every: this is somet