Hundreds of hot air balloons take part in the Great Line at the Mondial Air Ballons festival, in an attempt to break the 2017 record of 456 balloons aligning in an hour during the biggest meeting in the world, in Chambley, France, July 29, 2019. REUTERS/Charles Platiau TPX IMAGES OF THE DAY

Some of hundreds of hot air balloons are seen at the Mondial Air Ballons festival in Chambley, on the opening day of the biggest meeting in the World, France, July 26, 2019. REUTERS/Charles Platiau TPX IMAGES OF THE DAY

Hundreds of hot air balloons take part in the Great Line at the Mondial Air Ballons festival, in an attempt to break the 2017 record of 456 balloons aligning in an hour during the biggest meeting in the world, in Chambley, France, July 29, 2019. REUTERS/Charles Platiau

Hundreds of hot air balloons take part in the Great Line at the Mondial Air Ballons festival, in an attempt to break the 2017 record of 456 balloons aligning in an hour during the biggest meeting in the world, in Chambley, France, July 29, 2019. REUTERS/Charles Platiau

Hot air balloons fly at the Mondial Air Ballons festival in Chambley, on the third day of the biggest meeting in the world, France, July 28, 2019. REUTERS/Charles Platiau

Hundreds of hot air balloons take part in the Great Line at the Mondial Air Ballons festival, in an attempt to break the 2017 record of 456 balloons aligning in an hour during the biggest meeting in the world, in Chambley, France, July 29, 2019. REUTERS/Charles Platiau

Hundreds of hot air balloons take part in the Great Line at the Mondial Air Ballons festival in Chambley, in an attempt to break the 2017 record of 456 balloons aligning in an hour during the biggest meeting in the world, in Chambley, France, July 29, 2019. REUTERS/Charles Platiau

Hot air balloons fly at the Mondial Air Ballons festival in Chambley, on the third day of the biggest meeting in the world, France, July 28, 2019. REUTERS/Charles Platiau

Some of hundreds of hot air balloons are seen at the Mondial Air Ballons festival in Chambley, on the opening day of the biggest meeting in the World, France, July 26, 2019. REUTERS/Charles Platiau

A hot air balloon flies at sunset at the Mondial Air Ballons festival in Chambley, on the third day of the biggest meeting in the world, France, July 28, 2019. REUTERS/Charles Platiau

Hundreds of hot air balloons take part in the Great Line at the Mondial Air Ballons festival, in an attempt to break the 2017 record of 456 balloons aligning in an hour during the biggest meeting in the world, in Chambley, France, July 29, 2019. REUTERS/Charles Platiau

Hundreds of hot air balloons take part in the Great Line at the Mondial Air Ballons festival in Chambley, in an attempt to break the 2017 record of 456 balloons aligning in an hour during the biggest meeting in the world, in Chambley, France, July 29, 2019. REUTERS/Charles Platiau

Hundreds of hot air balloons take part in the Great Line at the Mondial Air Ballons festival, in an attempt to break the 2017 record of 456 balloons aligning in an hour during the biggest meeting in the world, in Chambley, France, July 29, 2019. REUTERS/Charles Platiau

A hot air balloon flies over Saint-Julien-les-Gorze after taking off from Chambley during the Mondial Air Balloons festival, on the second day of the biggest hot air balloons gathering in the world, France, July 27, 2019. REUTERS/Charles Platiau

Hundreds of hot air balloons take part in the Great Line at the Mondial Air Ballons festival, in an attempt to break the 2017 record of 456 balloons aligning in an hour during the biggest meeting in the world, in Chambley, France, July 29, 2019. REUTERS/Charles Platiau

Hot air balloons fly at the Mondial Air Ballons festival in Chambley, on the third day of the biggest meeting in the world, France, July 28, 2019. REUTERS/Charles Platiau

Hundreds of hot air balloons take part in the Great Line at the Mondial Air Ballons festival, in an attempt to break the 2017 record of 456 balloons aligning in an hour during the biggest meeting in the world, in Chambley, France, July 29, 2019. REUTERS/Charles Platiau

Hot air balloons fly over Saint-Julien-les-Gorze after taking off from Chambley during the Mondial Air Balloons festival, on the second day of the biggest hot air balloons gathering in the world, France, July 27, 2019. REUTERS/Charles Platiau

Some of hundreds of hot air balloons are seen at the Mondial Air Ballons festival in Chambley, on the opening day of the biggest meeting in the World, France, July 26, 2019. REUTERS/Charles Platiau

Hundreds of hot air balloons take part in the Great Line at the Mondial Air Ballons festival, in an attempt to break the 2017 record of 456 balloons aligning in an hour during the biggest meeting in the world, in Chambley, France, July 29, 2019. REUTERS/Charles Platiau

Hot air balloons fly at the Mondial Air Ballons festival in Chambley, on the third day of the biggest meeting in the world, France, July 28, 2019. REUTERS/Charles Platiau

Hot air balloons fly over Saint-Julien-les-Gorze after taking off from Chambley during the Mondial Air Balloons festival, on the second day of the biggest hot air balloons gathering in the world, France, July 27, 2019. REUTERS/Charles Platiau

Hundreds of hot air balloons take part in the Great Line at the Mondial Air Ballons festival, in an attempt to break the 2017 record of 456 balloons aligning in an hour during the biggest meeting in the world, in Chambley, France, July 29, 2019. REUTERS/Charles Platiau

Some of hundreds of hot air balloons are seen at the Mondial Air Ballons festival in Chambley, on the opening day of the biggest meeting in the World, France, July 26, 2019. REUTERS/Charles Platiau

A hot air balloon flies at sunset at the Mondial Air Ballons festival in Chambley, on the third day of the biggest meeting in the world, France, July 28, 2019. REUTERS/Charles Platiau