track down who was this person, who was he associated with, were there other friends or colleagues that may be involved in this with him. is there a problem of -- his co-workers? could be a case of basically workplace type violence, if you went to the fourth floor of that building, was he looking for a supervisor or somebody he had a gluj with to try to go after a particular person or group of people as well as to being down on the ground and just shooting anybody that went by. there's a great deal of that kind of investigation and it's going to take time to go through the records, the phones, the videos, interview family, neighbors, co-workers to really get a good identification and profile of this individual that they have on the ground there. >> all right, tom stand by. i want to go ba can to renee marsh there on the scene right outside the u.s. navy yard. you spoke with this commander. give us the latest what you're