Rappel shield half drop.

**Rappel shield half drop:** When climbing over a railing while rappelling, as shown in the video, and the lineup is correct, you can land on the shield in a half drop. This way, the shield doesn't break, but still gives you enough height to land on the railing. Attacker only. Doesn't work on every railing — it depends on the animation and the height/width of the railing.