the burglar and preposterous to begin with. and then screaming, he's in trouble. >> dr. henry lee, a lot of attention being put by the defense on the forensic aspect of all this, in particular, whether oscar pistorius was wearing his prosthetic legs and so on. the angle to fire, the bullets went in and the affect on steenkamp. what are going to be the crucial, crucial facts here? >> the crucial fact going to be first thing is the trajectory. what's the bullet and the direction of the bullet, the ballistic of the flying through the door and how high those bullet hole and where is her wound? and the blood splatter inside of the bathroom in addition, the distance determination, how far the shot was fired. those are extremely crucial.