Leah Hogsten | The Salt Lake Tribune l-r West Valley City Police Chief Lee Russo and Draper Police Chief Bryan Roberts discuss details about footage from Sgt. Davis Harris' body camera of the officer involved shooting January 14, 2015 during a press conference Friday, January 16, 2015. Jeffrey R. Nielson, 34, was shot and killed by West Valley City officer Jason Vincent in a Draper neighborhood Wednesday morning. In the video, Nielson broke free of the officers while they were changing handcuffs on Nielson, ran to the truck and pulled the butcher knife from the glovebox while trying to escape arrest.