Dallas County September 24, 2019 8:50 pm Texas Ranger Who Investigated Jean's Murder Testifies David Armstrong, a Texas Ranger in Dallas County, took the stand Tuesday in the Amber Guyger Murder trial. Armstrong investigated the shooting and the locks in the case. Wake Up to Something Good 7:47 Family and friends create new tech to prevent deadly crashes 2:53 Pro-Palestinian protestors wait to be released from jail 2:56 6 victims, including children, wounded in Fort Worth drive-by shooting 2:26 New Dallas County medical clinic to help those in need 6:05 Police remove demonstrators and encampments from UT Dallas campus