Police stress having a plan in case of active shooter situation

Police in western Connecticut are reminding people of the importance of a having a plan in case of an active shooter situation in the wake of a newsroom shooting Thursday in Maryland.
Fairfield Police Lt. James Perez encourages people and their employers to come up with a plan, if they don't have one already, and run through it.
Perez says in the days following the 2012 mass shooting at Sandy Hook Elementary School, he knew he had to do something. He came up with an active shooter training presentation to teach people not just to react or fight, but how to. He says the key is constantly preparing and training your mind so when your subconscious takes over, it knows what to do.
"You're walking through the mall, and you say to yourself, 'What would happen if a glass partition blew out, how would I handle it?' And really play through it," Perez says. "Every time you do that, your subconscious is taking that information, putting it deep inside, so that when an emergency does happen, you will be able to just react and not just stand there."
He says the more you run through these situations and plans in your head, or at work, the more likely you will be able to remember the them and react.
During the Maryland shooting, in which five people were killed, some employees were sending out tweets. Perez says that's acceptable only if you're in a safe environment and are putting out a call for help.