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People preparing hot air balloons for flight by heating the cold air inside the balloon using a large gas flame Breda NL Stock Photo - Alamy
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South Africa's Matt Silver-Vallance takes off to fly above the sea using helium filled balloons from the airfield of Robben Island across the Atlantic Ocean in Cape Town April 6, 2013. Vallance
![A look at the art of competition flying and how Nebraska was selected for national hot air balloon championship A look at the art of competition flying and how Nebraska was selected for national hot air balloon championship](https://bloximages.chicago2.vip.townnews.com/yorknewstimes.com/content/tncms/assets/v3/editorial/7/81/7812a5c9-0f56-5d68-9f61-d300c06fd67a/62f281900e7c8.image.jpg?resize=384%2C500)