Given they have audio and the most sophisticated voice matching technology on the planet, I think the photo is one of LE's least important clues as far as identifying and arresting a suspect. Anyone who knows BG would recognize his stance, shape, clothing and voice. I'm also equally sure some people have identified him to LE. They have more video as well. They also have every piece of physical evidence, including the bodies, interviews and/or interrogation and know who has a solid alibi and who doesn't. This isn't 50 years ago before there were security cameras in most businesses, GPS tracking, cellphones and advanced scientific testing. IMO