delahanty, a d.c. police officer, in the back. >> get out! get out! >> third shot goes high, hits that building across the street right there. the fourth shot hits timothy mccarthy, secret service agent, square in the chest. he's not wearing a bullet-proof vest. he falls to the ground. the fifth shot hits the armored, bullet-proof window of the car. as reagan and parr flash behind it, diving in. the sixth shot cracks across the driveway. no one knows where that sixth shot went until later. they realized it slapped off the side of the car, slipped through a gap between the door and the door frame. >> i thought it was firecrackers. and the next thing i knew, one of the secret service agents behind me just seized me here by the waist and plunged me headfirst into the limo. >> the agent is 50-year-old jerry parr, head of reagan's secret service detail. >> as we go in, i go in on top of him.