![Kirby Chambliss of the United States flies during a hot air balloon race in Phoenix, Arizona, U.S., June 5, 2018, to celebrate National Hot Air Balloon Day. Kirby Chambliss is one of the best aerobatic pilots in the world ? a five-time winner of the US National Aerobatic Championship and a former Men’s Freestyle World Champion. (Photo/VCG)](http://www.ecns.cn/hd/2018/06/12/407d168eb3674537a6d468996911a92b.jpg)
Kirby Chambliss of the United States flies during a hot air balloon race in Phoenix, Arizona, U.S., June 5, 2018, to celebrate National Hot Air Balloon Day. Kirby Chambliss is one of the best aerobatic pilots in the world ? a five-time winner of the US National Aerobatic Championship and a former Men’s Freestyle World Champion. (Photo/VCG)
![Kirby Chambliss of the United States flies during a hot air balloon race in Phoenix, Arizona, U.S., June 5, 2018, to celebrate National Hot Air Balloon Day. Kirby Chambliss is one of the best aerobatic pilots in the world ? a five-time winner of the US National Aerobatic Championship and a former Men’s Freestyle World Champion. (Photo/VCG)](http://www.ecns.cn/hd/2018/06/12/e6bbbfb42ac945d5af3a654124084fb1.jpg)
Kirby Chambliss of the United States flies during a hot air balloon race in Phoenix, Arizona, U.S., June 5, 2018, to celebrate National Hot Air Balloon Day. Kirby Chambliss is one of the best aerobatic pilots in the world ? a five-time winner of the US National Aerobatic Championship and a former Men’s Freestyle World Champion. (Photo/VCG)
![Kirby Chambliss of the United States flies during a hot air balloon race in Phoenix, Arizona, U.S., June 5, 2018, to celebrate National Hot Air Balloon Day. Kirby Chambliss is one of the best aerobatic pilots in the world ? a five-time winner of the US National Aerobatic Championship and a former Men’s Freestyle World Champion. (Photo/VCG)](http://www.ecns.cn/hd/2018/06/12/9f73266f85f4479db53ec30dd1526ad7.jpg)
Kirby Chambliss of the United States flies during a hot air balloon race in Phoenix, Arizona, U.S., June 5, 2018, to celebrate National Hot Air Balloon Day. Kirby Chambliss is one of the best aerobatic pilots in the world ? a five-time winner of the US National Aerobatic Championship and a former Men’s Freestyle World Champion. (Photo/VCG)