I came across this post on Gab, with this picture
The Nashville shooter's shoes changed.
I decided to check the video myself. On this school surveillance video, at 1:32, you can clearly see the shooter wearing one type of shoes. On this police bodycam footage video, at 5:57, the shooter is clearly wearing a different pair of shoes.
Possible false flag.
Disagree. Both your images are clearly the Van. Look how sharp the thine white line is in both of your images. I could see thinking the first image didn't have flames but it is clearly Van not Puma.