Sure, and the cases where it's particularly useful is when there's a lot of data and nothing is incredibly cut and dry. Or in finding the people after they've b

Sure, and the cases where it's particularly useful is when there's a lot of data and nothing is incredibly cut and dry. Or in finding the people after they've been identified (which is why the FBI released the photos on Thursday even though it looks like they had the evidence for > 36 hours). It turned out not to be too useful here given the identification process was trivial and the suspects started a crime spree the next day. This isn't always the case.