campus? they know that he worked here so they knew how he got on but did he go anywhere else before he went in that building? they have to try to retrace his steps. >> there will be cameras to help them? >> yes. we are trying to get that footage to see if we can pick up on any clues. the officials are talking about the toll this is taking on the police and the community and here is a listen to what they had to say earlier. >> this is a large-scale crime scene. it's a horrific crime scene. and police understands it takes not only physical, e emotional, and psychological toll on everyone who spent the entire night in that specific building. >> we will turn our attention for the remainder of today to assign family liaison officers and to support those families that have been stricken by this