13. About a mile or so from completion of the hike, I began to notice helicopter sounds.  I was high enough that I could see the helicopter flying into Tyndall Gorge.  He was carrying something at the end of a long cable.  My first thought was Oh No, a rescue.  It soon became apparent that he was making not one, but several passes up into Tyndall Gorge.  Then I thought; fire?  I don't see any smoke.