he did what he did. as we await the press conference, john king joins me now. what are the new details? >> when you hear the account we are getting about how they believe this played out it's chilling. he had a government i.d. as a contractor. he worked for hp and did i.t. contracting and was allowed to drive on to the base. he was waved on to the base. he parked his car and methodically and calmedly walked into the building carrying an ar-15, a rifle and a handgun. and he went up stairs to a higher location. looked down on the atrium and opened fire. >> i talked to a person who has worked in that building, there was another layer of security inside that building where the gunman entered. we don't know if that is where the shooting began or if he got by that security. >> it is still an active crime