I happened upon these 2 bull elk along the Madison River in YNP. I could see from their body actions that they were about to challenge each other. The fight started just as I parked my car. I was fortunate enough to have my camera on my tripod and was able to set up in just a few seconds. I did not have time to check my camera settings and knew I was going to be shooting into the sun. However; you do not pose these situations and I was able to get off the following sequence of photos.