https://www.youtube.com/watch?v=Yh-kuztsE1s
https://www.youtube.com/watch?v=YL1FblthxQ0
After the second accident (all pilots ejected and survived to both crashes) new safety rules were elected at Le Bourget to establish a minimal security height never to be trespassed during demonstrations.
What was doing this aircraft here and at this altitude for this kind of manoeuvring is rather astonishing.