A prominent security expert believes the U.S. military should expand its active-shooter training to include the people who may be trapped in such a situation, not just the law-enforcement forces who respond. Shootings typically last no longer than 12 minutes — and it takes first responders an average of 14 minutes to arrive on scene, said Chris Grollnek, a security consultant with Countermeasure Consulting Group in Frisco, Texas. “What is the point of spending the money on first responders if they’re not going to get there until two minutes after it’s done?” said Grollnek, a former Marine staff sergeant and SWAT team member. Read more