Agent Kellerman, in the front seat of the car, gave orders over the car's two-way radio to the lead vehicle in the procession "to the nearest hospital, quick!" Hill was shouting as loudly as he could: "To the hospital, to the hospital!" En route to the hospital, Hill flashed a "thumbs-down" signal and shook his head from side to side at the agents in the follow-up car, signaling the graveness of the president's condition.
