A mother has said she feels 'helpless' and called UnitedHealthcare money-hungry after the insurance company allegedly denied covering her son's rehab for a brain injury. Peyton Alvarez, a 25-year-old airline mechanic at PSA Airlines, crashed into a tree while riding his motorcycle in Greenville, South Carolina, on April 28. Although he was wearing a helmet and other protective gear, the collision caused a serious brain injury that left him unconscious for a month and a half. Doctors told his mother, Trina Alvarez, that Peyton may never wake up. But the young man eventually opened his right eye in early June,...