Karen Read defense attorney Alan Jackson grills MSP Sgt. Yuri Bukhenik about the behavior of ATF Agent Brian Higgins on surveillance video at a bar less than an hour before John O’Keefe’s death. Karen Read defense attorney Alan Jackson grills MSP Sgt. Yuri Bukhenik about the behavior of ATF Agent Brian Higgins on surveillance video at a bar less than an hour before John O’Keefe’s death.