This transcript is interesting: 

 J.L: As far as I can tell, I remember quickly, he was a white gentleman, about 5-foot-8 inches, had kind of a mustache. Large gun. 
 D: How old is he? 
 J.L: I really saw him from a far distance. He was probably around mid-20s." 
 ... 
 J.L.: When he came in, he just came over to customer service and told them to open the vault. 
 D: He told them to open the vault when he went over to customer service? 
 J.L: Yeah. "Open the vault, open the vault." 
 D: So this was possibly some type of robbery then that went bad? 
 J.L.: Correct. Correct.  
 ... 
 D: Does it look like that's the guy on the camera, is that the guy who was doing the shooting? Can you tell by the clothing? 
 J.L.: Yeah, it could have been. It's about the age. I'd have to see his face to be able to tell because of his mustache, it was like he had a mustache.