Star Wars: The Force Awakens Comic Con Trailer Breakdown – 46 Things You Need To See
36. Fire In The Hole
A new angle for the explosive shot seen in the second trailer, this time presumably with stunt performers testing out the pyros.
Oddly, traditional approaches to pyro means this is rarely the way it's tested, given the cost, but the fact that the performers are clearly not in costume suggests this is some sort of test run. And again, signs that no expense has been spared in preparing key scenes.