I had a chance to stay on top of Mt. Sterling last night close to the tower. It was very windy but not as cold as I expected. Anyhow, a couple of hikers that camped in the next site over had their packs (they were tied together) drug down the trail. The bear (which probably smelled the gatoraid that once was in the bottle) bit into the bottle and was able to puncture the nalgene (pretty impressive).
At the horse tie up stand there were gas cans (probably full of water) and several bags of cement. The bear tore into bags drug them around the woods and punctured through the plastic gas cans.
We hiked out with the other hikers and reported the incident.
I wonder how much bear activity goes on at each site? This was my second trip to the Smokies and the second incident with wild animals.
Be safe out there.