Attorneys pored over surveillance-camera footage in court this month, slowing it down and blowing it up day after day so jurors could scrutinize the decision Brandon Cowins said he had only moments to make when a gunman opened fire outside his home. Egged on by his girlfriend — or to protect others in his Greenacres neighborhood from the bullets — Cowins reversed his car out of the driveway and raced down the street to where 20-year-old Anthony Esquivel fled after he stopped pulling the trigger. Cowins swerved into Esquivel as he ran, striking him with his car and throwing him...