Please just stop! The same photo repeated several times has two guys with backpacks that are both identified as suspects in one but then an unattended backpack

Please just stop! The same photo repeated several times has two guys with backpacks that are both identified as suspects in one but then an unattended backpack in another. and then at least three others people/bags identified in other pictures. How many bombs were there? I only heard of two explosions and I believe one undetonated bomb found. And then there are the pics of the two men (one with a white hat and backpack and one with a blue shirt and duffel) that later are pointed out as "backpack missing" but fails to note that in the "backpack missing" picture they are in a much more crowded spot and you can't see if he has the backpack hanging in front of him like people often do when in a tight crowd with a backpack (also similar to what the dopey looking "beard guy" suspect does with his backpack slung over his forearm in other pics). And noting that in some shots they were not "watching the race"? Wow... guilty of being distracted, people watching, day dreaming, etc, etc, etc of many possible reasons that in one random snap shot in time you are not looking precisely where everyone else is.