I didn't see any pics of DT or TT dropping their backpacks. You saw this? Do you have the link? I thought LE didn't show the video because that was considered vital evidence. I'd think LE would keep that evidence close to the vest in order to insure that nothing essential leaks out to the public or the suspects.
I want to know whether there are other people involved too, but at this time, all I've heard and read is that DT claimed it was only he and his older brother TT. Should we accept DT's words at face value? Probably not, but at this point, until LE finds any links between the brothers and terrorist organizations, I think we have to.