A Los Angeles Police Department officer died Sunday, three days after he was injured in an accident during training. Officer Houston Tipping, a bike instructor, was grappling with another officer in a training exercise at the Elysian Park Academy when he fell and “suffered a catastrophic spinal cord injury,” the LAPD said in a press release. Despite the efforts of other officers, the Los Angeles Fire Department and medical professionals at Los Angeles County+USC Medical Center, Tipping died on Sunday...