Cool indeed
I believe the sound of it was blowing their ears
Good thing is that he was landing - if the sonic boom will hit them at such low height some of them would end up deaf for sure
A sonic boom at 2 miles up will blow out some eardrums. When the Space Shuttles landed here in Southern California they double-boomed about 35 miles away and it shook my house.
An F-16 creating a boom at 4.2 miles above ground has been reported to explode tomatoes (and the air is thinner up there).