was unperturbed by the thin branch and the speeding current. After a deep breath, our volunteer set forth alon

was unperturbed by the thin branch and the speeding current. After a deep breath, our volunteer set forth along the precarious crossing. One step, then another... a few feet crossed with no trouble, and I started to think that maybe things would be fine. That's when the branch jerked and started to shake — it was rolling over! With no time to think, all could do was...