Here's a short video I took at the Copper Mountain Guitar Town, 2009. Elevation 9,700+ ft. at the stage.
http://www.youtube.com/watch?v=5hTW90ELE_8&context=C3de9c54ADOEgsToPDskLLB5mtBwJRt3TeOJF9IsVG
Tommy had just finished Mombassa, fell to his knees, and had to be helped back to his feet...