Dutch was on the top right row with an American flag type t-shirt. Mostly white IIRC. Just on trying to recall the video (about the sound analysis) there was a man in the row below Dutch and just to Dutch’s right that had a blue shirt.
The youtube “expert” showed a puff of something off of the metal railing. He surmised that is one of the bullets that went through Dutch - and may have been a larger caliber than the common .223 to be able to penetrate a body and still have enough energy to hit the railing with such force. (I have no idea.)