BRISTOL, ENGLAND - AUGUST 11: Members of the public gather to watch as balloonists set up a tethered hot air balloons to perform in the 'nightglow' on the opening day of the Bristol International Balloon Fiesta on August 11, 2016 in Bristol, England. The four day event, now in its 38th year, is Europe's largest annual hot air balloon event in the city that is seen as many as the home of modern ballooning. (Photo by Matt Cardy/Getty Images)
BRISTOL, ENGLAND - AUGUST 11: Members of the public watch tethered hot air balloons perform a 'nightglow' on the opening day of the Bristol International Balloon Fiesta on August 11, 2016 in Bristol, England. The four day event, now in its 38th year, is Europe's largest annual hot air balloon event in the city that is seen as many as the home of modern ballooning. (Photo by Matt Cardy/Getty Images)
BRISTOL, ENGLAND - AUGUST 11: Members of the public watch tethered hot air balloons perform in the 'nightglow' on the opening day of the Bristol International Balloon Fiesta on August 11, 2016 in Bristol, England. The four day event, now in its 38th year, is Europe's largest annual hot air balloon event in the city that is seen as many as the home of modern ballooning. (Photo by Matt Cardy/Getty Images)
BRISTOL, ENGLAND - AUGUST 11: Members of the public watch tethered hot air balloons perform in the 'nightglow' on the opening day of the Bristol International Balloon Fiesta on August 11, 2016 in Bristol, England. The four day event, now in its 38th year, is Europe's largest annual hot air balloon event in the city that is seen by many as the home of modern ballooning. (Photo by Matt Cardy/Getty Images)
BRISTOL, ENGLAND - AUGUST 12: A balloon pilot fires the burners in a tethered hot air balloon on the second day of the Bristol International Balloon Fiesta on August 12, 2016 in Bristol, England. Due to the adverse flying conditions the planned mass ascent at sunrise was cancelled. The four day event, now in its 38th year, is Europe's largest annual hot air balloon event in the city that is seen as many as the home of modern ballooning. (Photo by Matt Cardy/Getty Images)
