The West Yellowstone Smokejumper base is pictured in West Yellowstone, Montana, U.S., August 10, 2021. Smokejumpers are known for their emotional calm and mental alertness. "If you're easily excitable, you're probably more prone to make mistakes during your initial parachute training," says West Yellowstone base manager Knute Olson (not pictured). REUTERS/Brittany Hosea-Small SEARCH "WILDFIRES LOOKOUT" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES