If you ask me, it's "jfk Jr." That's activating the gunshot wound "simulator" in his pocket. If it wasn't for the wounded and dead, but, well, placing and preparing such storyline isn't that hard either and with plan in mind, though of. Had seen clip of him after the shots and keeping calm standing, if he's in on it, seems logic at once. Now I'm looking for last 30 seconds before if we can maybe spot a sign from Trump to activate, and for that turning head to not show on camera if device somehow malfunctions. It's what would make sense towards all the clock confirmations imo. Such clock hits like fight and fist can only be if planned in detail imo. And it happens time and time again.