Day 4: Video expert, more witnesses testify in Ray Tensing retrial Scot Haug, use of force expert, testified Tuesday June 13, 2017, that Ray Tensing didn't have to shoot Sam DuBose in the head - could've "de-escalated" the situationPhoto by: Cara Owsley | The Cincinnati Enquirer Day 4: Video expert, more witnesses testify in Ray Tensing retrial A photo from a training guide that Scott Hughes, Hamilton Township police chief, used in a training that Ray Tensing was enrolled tookPhoto by: Cara Owsley | The Cincinnati Enquirer Day 4: Video expert, more witnesses testify in Ray Tensing retrial Scot Haug, use of force expert, testified Tuesday June 13, 2017, that Ray Tensing didn't have to shoot Sam DuBose in the head - could've "de-escalated" the situaPhoto by: Cara Owsley | The Cincinnati Enquirer Day 4: Video expert, more witnesses testify in Ray Tensing retrial Scott Hughes, police chief in Hamilton Township in Warren County, testified Tuesday June 13, 2017, he taught fundamentals in traffic stops class that Ray Tensing, took. Photo by: Cara Owsley | The Cincinnati Enquirer Day 4: Video expert, more witnesses testify in Ray Tensing retrial Ray Tensing, former University of Cincinnati police officer, during the 4th day of his trial Tuesday June 13, 2017. Tensing is charged with murder in the death of Sam DuBose, during a routine traffic stop on July 19, 2015. The case is being tried in the Hamilton County Common Pleas courtroom of Judge Leslie Ghiz. This is the second trial. The first ended in a hung jury.Photo by: Cara Owsley | The Cincinnati Enquirer Day 4: Video expert, more witnesses testify in Ray Tensing retrial Grant Fredericks, video expert for the prosecution, gives testimony frame by frame of Ray Tensing's body camera.Photo by: Cara Owsley | The Cincinnati Enquirer Day 4: Video expert, more witnesses testify in Ray Tensing retrial Assistant Prosecutor Stacey DeGraffenreid examines Grant Fredericks, video expert for the prosecution, as he gives testimony frame by frame of Ray Tensing's body camera. Photo by: Cara Owsley | The Cincinnati Enquirer Day 4: Video expert, more witnesses testify in Ray Tensing retrial Stew Matthews, attorney for Ray Tensing, seated, during the fourth day of testimony in his retrial in Hamilton County Common Pleas Judge Leslie Ghiz’s courtroom Tuesday, June 13, 2017Photo by: Cara Owsley | The Cincinnati Enquirer Day 4: Video expert, more witnesses testify in Ray Tensing retrial Sister and mother of Sam DuBose, Terina Allen and Audrey DuBose, sit in the courtroom during the second trial of Ray Tensing. It was the fourth day of testimony in the Hamilton County Common Pleas courtroom of Judge Leslie Ghiz, Tuesday, June 13, 2017. Photo by: Cara Owsley | The Cincinnati Enquirer Day 4: Video expert, more witnesses testify in Ray Tensing retrial Hamilton County Common Pleas Judge Leslie Ghiz is the presiding judge in the retrial of Ray Tensing. Tensing, the former University of Cincinnati police officer, is charged with murder in the death of Sam DuBose, during a routine traffic stop on July 19, 2015. Tensing's lawyer, Stew Mathews, has said Tensing fired a single shot. This is the second trial. The first ended in a hung jury. Photo by: Cara Owsley | The Cincinnati Enqurier Day 4: Video expert, more witnesses testify in Ray Tensing retrial Stew Matthews, attorney for Ray Tensing, during the fourth day of testimony in his retrial in Hamilton County Common Pleas Judge Leslie Ghiz’s courtroom Tuesday, June 13, 2017. The first part of the day was taken up with testimony from video expert for the prosecution, Grant Fredericks. Photo by: Cara Owsley | The Cincinnati Enqurier Day 4: Video expert, more witnesses testify in Ray Tensing retrial Grant Fredericks, video expert for the prosecution, gives testimony frame by frame of Ray Tensing's body camera. Tensing, the former University of Cincinnati police officer, is charged with murder in the death of Sam DuBose, during a routine traffic stop on July 19, 2015Photo by: Cara Owsley | The Cincinnati Enqurier Day 4: Video expert, more witnesses testify in Ray Tensing retrial Grant Fredericks, video expert for the prosecution, gives testimony frame by frame of Ray Tensing's body camera.Photo by: Cara Owsley | The Cincinnati Enqurier