Law firm rampage has officials puzzled | Chicago Tribune
Police said they were trying to reconstruct how the man got through security and up to the 38th floor of the building at 500 W. Madison St. The security guard who was held at gunpoint left immediately after the shooting, took a train to Indiana and had to be tracked down by authorities, according to a police source.
I'm thinking the "security guard" isn't going to be one much longer. I can't blame him for complying for as long as a gun was held to his head. But running off home like that, while surrounded by hundreds or thousands of people in the Metra station who didn't know what he knew about what had happened, strikes me as something worse than panic. He had a duty to stick around and tell the police what he knew, even though he came off as more of an enabler than a hero.