OK, the bears & the children in the bear boxes - might be unnecessarily tough on the bears, though.
Ha!!
All kidding aside - make sure you put your empty backpacks inside the bear box, or at least completely out of sight.
Last year at the portal, 2 of my friends left their completely empty backpacks in the back of my friend's pickup. I was coming back from the bathroom when it was pitch black, and almost crapped myself when I walked past the truck and a bear jumped out of the back of the truck after I apparently spooked it. I didn't scare it soon enough though, because he managed to chew up 2 perfectly good packs!
