Samsara Duffey pets Jumper the pack mule after he and Blueberry the horse arrive with electrical supplies accompanied by Norman Kamrud (not pictured), at the Patrol Mountain Fire Lookout in Augusta, Montana, U.S., July 16, 2021. By around the 1950s, around 5,000 fire lookout towers had been built across the United States. Many have since closed, as infrared cameras and drones replace the human eye. The Forest Fire Lookout Association estimates that only around 400 lookout towers are still operational today. REUTERS/Brittany Hosea-Small SEARCH "WILDFIRES LOOKOUT" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES