While Mr. Rittenhouse is being pursued by the group, an unknown gunman fires into the air, though it’s unclear why. The weapon’s muzzle flash appears in footage filmed at the scene.

Mr. Rittenhouse’s gunfire is mixed in with the sound of at least 16 other gunshots that ring out during this time.

This is huge development. If his self defense case wasn't already solid, it should be now. Where did all the rest of those gunshots come from? Who else was shooting?