This guy 100% knew the shooter:

 

This man cheering Charlie Kirk's death KNEW where the shooter was

He didn't look around. He looked directly at a specific spot.

This guy 100% knew the shooter. He stood up & cheered immediately after Charlie was hit.
No shock, no disbelief. 

VIDEO

'TRUE EVIL': Chaffetz recounts what he saw leading up to Charlie Kirk's ...
https://youtube.com/watch?v=_FpiA6U6Raw&si=WTEKmFFAd4F9Srh1