“I spent two million dollars on rotor-wing contracts, and I never learned how the tail rotor worked.”

“It’s basic physics,” Henry said, turning the model in his hands to show the tail assembly.

“If you don’t balance the force, the whole aircraft spins out of control.”

I watched from the arched doorway, adjusting my wristwatch band against my wrist bone.

Ethan reached out one hand, his fingers touching the tiny blue plastic rotor blade without picking up the model.

“Can you show me the landing gear assembly?” Ethan asked.