PORTLAND, Oregon (Reuters) - An Oregon man hurled both of his prosthetic legs at a state trooper, striking him with one, after his son was arrested on suspicion of drunken driving, police said on Monday. ADVERTISEMENT The incident on Friday began when the trooper stopped a sport utility vehicle going the wrong way on a highway in southern Oregon. The trooper at first detained only the driver, Adam Kackstetter, 26, after he became aggressive. But then his father, Joel Kackstetter, 53, a passenger in the vehicle, grew hostile, a police spokesman said. The senior Kackstetter charged at the arresting officer...