I’ve been looking at those pictures on reddit.com and many others of those two men all afternoon. Later I was watching Hannity and a reporter said law enforcement showed pictures of the suspects to him and other reporters Sean asked him if the men they were looking for would have a backpack with something protruding in the shape of a bomb because there were listeners who would like to know. The reporter said that the FBI had already asked for the public’s help in identifying people who fit that description. The way the interview went, it seemed that Sean had seen the photos you’ve posted and wanted the reporter to confirm that those were the men sought. He seemed to confirm it without breaking the FBI rules of actually describing the men.
Supposedly, the guy in blue has a facebook account, and is a marathon runner who missed the race. I did see one picture of him posing in the same jacket for a picture, with a Boston Marathon poster/tarp behind him. Highly unlikely to do this if he was behind the bombings.