d.n.a. looking for different components that could be traceable. that s a painstaking process. but at this stage, there is very little else for law enforcement to go on here to get a sense of who this suspect might be, what the profile of the suspect should be. brian: couple things it could be if you want to remove the fingerprints and go through the forensics have one way. is there another track that looks at what austin means what south by southwest means. capital of texas? auto could they be trying to send a message in the city they picked. i m sure some of the psychologic wall profilers and the fbi and other federal agencies are going to be looking at how could this be terrorism or what would it fit into in terms of an extremist context based on the target set right now, can you make some very general, take some very general theories how it s antigovernment activity u it s domestic terrorism, but we really don t know. there is also just the possibility that this is somebody who i