A Thunderbolt engine built for Red Bull Air Race planes stands at the Lycoming engine factory in Williamsport, Pennsylvania, United States on October 30, 2013. // Balazs Gardi/Red Bull
A Thunderbolt engine built for Red Bull Air Race planes stands at the Lycoming engine factory in Williamsport, Pennsylvania, United States on October 30, 2013. // Balazs Gardi/Red Bull
A Thunderbolt engine built for Red Bull Air Race planes stands at the Lycoming engine factory in Williamsport, Pennsylvania, United States on October 30, 2013. // Balazs Gardi/Red Bull