Holy coincidence, Batman! Clackamas Town Center shooting: Police, mall workers trained earlier this year for shooting scenario --In late spring, several teams of sheriff's deputies worked with the Clackamas Town Center's unarmed security staff to put on a one-day training seminar during which they staged several 'active shooter' scenarios. --Following their agreed-upon plans, mall security officers placed the 1.4 million square-foot facility on lock-down, blocking the entrances. 12 Dec 2012 Six months before a lone gunman burst into Clackamas Town Center Tuesday, firing dozens of rounds into the crowds of shoppers, police and mall employees trained together for just such an emergency. Because of their similar training and shared goal of advancing toward and neutralizing the threat, officers from different agencies arrived "on the same page," though they came from the FBI, federal Bureau of Alcohol Tobacco and Firearms and Explosives, Oregon State Police and police departments in Portland, Milwaukie, Gladstone, Oregon City, Canby, West Linn, Lake Oswego, Molalla, Sandy and Woodburn.