Hero Police Officer Speaks Out About Daring Rescue

Sgt. Todd Volk darted across two lanes of traffic to take over the wheels of a semi-truck.
1:27 | 12/18/15

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Transcript for Hero Police Officer Speaks Out About Daring Rescue
week. Dramatic rescue on the highway. A police officer springing into action stopping a runaway truck caught on camera and now hearing from that officer and ABC's Ronan Reena has the story. He might be passed out. Do you want to stop him. Reporter: We're hearing for the first time from the heroic officer who stopped this semi tractor trailer barreling down a Nebraska highway. Knew what we needed to do, felt comfortable doing it so did it. Reporter: Senator Todd volk leaping on and into the semi's cab taking over the wheel as the driver was suffering a seizure. I just had the perfect angle. There's not much speed left in me. Reporter: Sprinted at miles 20 miles per hour stopping the ten tons of moving steel before anyone was injured. There's so many different possibilities that could have happened even before. Reporter: Many who saw it think sergeant volk looks like a stunt man. Open the door when I tell you. Reporter: Similar to Tom cruise attempting to stop a plane as it takes off in "Mission: Impossible" and this scene in "The transporter" looking eerily similar. Sergeant volk saying he did what needs done. My wife telling me this might be one of the crazier ones. Reporter: The driver grateful for the officer jumping into action. For "Good morning America," Reena ninan, ABC news, New York. Amazing what he did.

This transcript has been automatically generated and may not be 100% accurate.

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