A 32-year-old woman is being treated for life-threatening injuries she suffered when a piece of flying metal passed through her windshield and hit her in the head. The accident happened Saturday afternoon in Appleton. Officers were called to the hospital when the woman was brought in. When they went to the place where the accident happened, they found a large piece of metal in the roadway. They say it looks like part of a vehicle. Investigators don’t believe it was an intentional act. The woman’s name hasn’t been released.