Hot air ballooning is an individual but also a team sport. What could an aerostat pilot do if there were not two or three crew members on the ground to help him set up the balloon? Assemble the basket to the envelope, set up the fan to blow in cold air that will soon be heated by the burner. Ensure the filling of the propane bottles, help with the inflation. And finally learn not to lose the balloon that flies in the air while following the sometimes winding road. Each pilot has his own habits and it is up to the crew member to get used to him. It takes about a year for a novice to get the right level. And it is often an exceptional adventure.