By HOLLY RAMER
Documents released by a Maine sheriff’s office give the most detailed timeline yet of the warning signs and failed efforts to stop the gunman who killed 18 people and wounded 13 others at a bowling alley and bar last week. The Sagadahoc County Sheriff’s Department says Robert Card’s son told authorities in May that his father had grown more angry and paranoid since January. In July, Card spent two weeks at a psychiatric facility after erratic behavior while training with his Army Reserve unit in New York. The new documents also show that deputies twice visited Card’s home in September, including once when they believed he was there but didn’t answer the door.