photo. >> good afternoon. >> they were going to make this droumt announcement and ask for help. find these guys. >> we are releasing photos of these two suspects. the photos and videos are posted for the public and media to use, review, and publicize. >> this rules out the kind of lone wolf, crazy person scenario. two people are together, practicing, potentially, buying their products together or selling together. they're also planning their escape. >> we worked all through that night, up until the 10:00 news, and just about 11:00, our phones are going off, crazy. crazy. >> oh, my goodness. all units, respond. officer down, officer down. >> get on it! >> over at cambridge, a cop was shot. >> police are investigating a fatal shooting of m.i.t. campus police officer by two men, who then committed an armed carjacking in cambridge. >> we hear the scanner, and it