Now to the extraordinary video tape of a state trooper displaying safety. He was putting his life on the line to save his fellow officers facing barrage of bullets. Abc chief justice correspondent... See More
Now to the extraordinary video tape of a state trooper displaying safety. He was putting his life on the line to save his fellow officers facing barrage of bullets. Abc chief justice correspondent pierre thomas has the story. Reporter: Shortly after 9:00 that chilly friday morning, a police scanner in smalltown pennsylvania crackled with shots fired. Several victims. Several victims. Yeah, 435 we're responding to the shooting. Reporter: But the armed suspect has already fled the scene. He's racing in a pa trom car trying to catch up with the man who has just killed three people. Up ahead coming into frame, the suspect has intentionally hit another police car, slow down the car, that's a head-on collision that he's racing for. He's worried about he's about to become the next murder victim. I'm about to hear gun shots. I fully expected him to approach the passenger side of car. Reporr: Ramming the suspect's vehicle to distract the shooter. The suspect gets out of his truck while another trooper arrives on the scene. He came running through the smoke, firing his weapon. I thought tim was dead. Bullets fly through it. This photograph shows you the eight bullet holes from the outside. It happened so fast. Rewind. Slow it down. You can see right there the suspect gun in hand, a .357 magnum coming toward stoudemire. He's wearing a bullet proof vest. Staggering he and another officer returned fire. The suspect is killed and lives are saved thanks to trooper stoudemire. He exemplified the very best of what it means to be a public servant. Public service involving life and death. Pierre thomas. That's one brave trooper. Our thanks to pierre.
This transcript has been automatically generated and may not be 100% accurate.