Legendary performer Neil Diamond showed up to boost the spirits of first responders fighting a massive wildfire in Colorado. "Thank you to each of you for making this trip," the singer told first responders. It's a rare live appearance by the music icon, who lives in the area affected by the fires. Earlier this year, Diamond announced he was retiring from touring after he was diagnosed with Parkinson's disease. Of course, as Diamond sang, "Sweet Caroline," everyone sang right along with him.