Deer hunters going up a remote mountain trail lost traction, blew a tire then slid off the edge of the mountain trail up against a tree. The alternator on my Blazer went out on the way up. While winching the truck away from the tree, the battery died. I had to start the pickup, remove it's battery, put it in the Blazer and put the Blazer battery in the pickup. Once the pickup was back up on the trail, we changed the tire and drove the vehicles down the mountain to the camp. The Blazer battery in the pickup was charged so we swapped the batterys back to their vehicles, collected the money and headed home.