Sport Balloons There are two kinds of sport balloons: gas and hot air.

Sport Balloons
    There are two kinds of sport balloons: gas and hot air. Hot air balloons are safer than gas balloons, which may catch fire. / Hot air balloons are preferred by most balloonists in the United States because of their safety. / They are also cheaper and easier to manage than gas balloons. / Despite the ease of operating a balloon, / pilots must watch the weather carefully. / Sport balloon flights are best early in the morning or late in the afternoon when the wind is light.