While I didnt really spend a lot of time around the set because of other tasks I was pursuing thru the day, I did make it there im time in the evening to see the big scene they had planned...an explosion.
I dont know which cast may have been in the scene since they had everyone standing almost a block away incase anything in the scene were to go wrong.
As it turned out...it went off just fine.
I know Anna Torv and Kirk Acevedo were around at times. But whether they were in any way taking part int his scene, I am unsure.
Anyways.... a video (might be the ONLY video of it since very few there had good quality cameras, let alone video recording devices.) of the scene...with oohs & aaahs from the crowd of 40-50 or so that were being held about a block back with me.