"Poteau Oklahoma Balloon Fest 2009. Taken during what is called a ""balloon glow"".  A hot air balloon glow is when the balloons are set up and inflated at night or dusk, and the pilots light the inside of the balloon with the propane burner used to create the hot air that causes the balloons to fly.  The flames from the burner cause the colorful balloon envelopes to glow in the dark.  The balloons due not actually take off, so the pilots can only run the burner for a short time and then let it cool down to keep from lifting off."
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