(03.10.) “Whoa! Whoa!,” Secret Service officers were shouting at the car, according to a witness, Shawn Joseph, 29. “It looked liked [the driver was] scared or lost. I thought they might have been a tourist.”

But then, witnesses said, officers tried to place a barrier in front of the car. The driver swerved. The officers moved the barrier. She hit it, and a Secret Service officer was thrown up on the hood and then off the car.