Morning Joe 09/17/13

Scarborough: Why was Alexis allowed to be a contractor?

Top Talkers: On Monday, alleged gunman Aaron Alexis killed 12 people at the Washington Navy Yard. His motives remain unclear, but on the day after the tragic shooting, more details about Alexis' life are emerging. The Morning Joe panel – including Mike Barnicle, NBC News' Luke Russert and Jim Miklaszewski and New York Magazine's John Heilemann – discuss Alexis and the president's speech on the issue. ... more Duration: {{video.duration.momentjs}}