Dash cam video released by the State Patrol shows how a high speed chase, that reached speeds of more than 100 miles an hour, turned deadly Thursday morning.

The Eau Claire County Sheriff, Ron Cramer, says training likely saved a deputy's life after the high speed chase and crash that killed another man. Sheriff Cramer says a lot of other departments have been asking how the deputy is doing. He says the deputy is shaken up but the sheriff says he believes the deputy did everything his training told him to do.

"He did absolutely what he was trained to do in deploying the stop sticks and one of the things they're told never to do is stand behind the squad," says Sheriff Cramer.

Sheriff Cramer says Deputy John Gunderson was just outside of his squad when it was hit during the chase.

"That was the first thing I asked, was the officer in the car or not. He (An Eau Claire County Captain) said no he was deployed outside of the vehicle. Had he been inside the car we might have had an officer fatality," says Cramer.

The chase started early Thursday morning in Osseo. Jackson County District Attorney, Gerald Fox, says it started when a State Trooper tried to pull over 30-year-old Ryan Bogdonovich for a traffic violation. In the video you can hear the trooper saying Bogdonovich ran a red light and crossed the center line. Less than ten minuets after the trooper hit his lights Bogdonovich slammed into Gunderson's squad on Highway 10 near Fairchild.

Cramer says Gunderson has been involved in several dangerous situations, including a shooting.

"John has been involved in some of our high risk situations, like a shooting in the Town of Ludington. It's really an emotional roller coaster for a young officer to go through all of those situations; he's handled the job very well," says Cramer.

DA Fox told us a toxicology report is pending but first responders did smell alcohol on Bogdonovich's breath.

Cramer says the squad car was totaled but will be replaced. He says Gunderson has been with the department for about five years.