The best analysis I have seen so far is Juan Browne’s on his Blancolirio YouTube channel. While the direct cause of the accident may come down to the P-63 pilot’s loss of situational awareness, there appears to be contributing factors could have easily eliminated two aircraft trying to occupy that same point in space at the same time. Mr. Browne’s discussion of Reno air racing maneuver rules and fighter aircraft joins in turns was helpful in understanding the physics of the aircraft turning maneuver. It will be interesting to read about the logic behind the airshow plan that had aircraft with 50 to 100 knot speed differences flying at the same altitude and turning inside each other. Sadly, the price is six fine people who are no longer with us.