BTW I call BS on those whole pictures. No frame of reference, those pictures could have been taken at Disneyworld.
There are more pictures of him. I just can't get to them at work.
He makes his way from the back of the crowd all the way up to where the bomb goes off. There are three pictures of him, and he's travelling alone except for his trusty "I can hold a pressure cooker" backpack.
I really think he's the guy.