yes... during the shoot out you can see that at least one of them was photographed by the guy in the apartment who witnessed the shoot out. In the photograph you can see one of them wearing a backpack. It is huge. If I run across the photo I will post it.
Police are saying they shot the MIT cop in cold blood. They were carrying the backpacks with them at that time. Were they going to plant the bombs at the MIT? Did the MIT cop recognize them as the 2 bombers from the photos that were just released hours earlier?
Looking at the map posted in #2556, how did the perps get from point #2 to point #3 in less than 5 minutes while lugging huge backpacks full of explosives?