Counterpoint:
Batted ball that strikes either of the upper catwalks (known as the 'A-Ring' and the 'B-Ring'), including the masts that support each of those catwalks as well as any angled support rods that connect the 'B-Ring' to the masts that support the 'C-Ring' in fair territory: In Play. If caught by fielder, batter is out and runners advance at own risk.
Batted ball that is not judged a home run and remains on a catwalk, light or suspended object: Two Bases.
Batted ball strikes catwalk, light or suspended object over foul territory: Dead Ball.