Near the end of the video I posted yesterday I pointed out a projectile that changed directions midair while trailing white smoke. After finding that projectile, I looked for it in other videos of the WTC2 collapse. I found a video from a similar point of view to the first (and Nate found me a high-res version of it), except in this video the trail can be followed all the way to the bottom of the collapse. This follow-up video explores the significance of this find.