quickly shrank as the balloon climbed, becoming engulfed in a sea of clouds.
Tom stood on the bench working the funnel, while Sarah controlled the exhaust rope. Hainsworth tried to help but was too fatigued.
Just then, Hainsworth’s mouth dropped opened as he looked out on the horizon.
“What is it?” asked Sarah, noticing his panic.
“I forgot about Heathrow Airport!”
Sarah turned. An enormous 747 four-engine jet was headed right for them.
Immobilized by fear, Tom, Sarah and Hainsworth watched the balloon helplessly drift along the path of an oncoming plane. They now realized they were directly over one of the busiest airports in the world. Every altitude had an object flying in a different direction: single propeller Cessnas, double-propeller cargo planes, passenger jets and double-decker Airbuses.