Helicopters

Chapter 1: To the Rescue

Chapter 1: To the Rescue

Chapter 2: Helicopter History

Chapter 2: Helicopter Hsitory

Chapter 3: Spinning Blades

Chapter 3: Spinning Blades

Chapter 3: Spinning Blades

Chapter 3: Spinning Blades

Chapter 4: Modern Choppers

Chapter 4: Modern Choppers

Chapter 4: Modern Choppers

How it Works

Fun Facts/Quiz

Key Words/Index

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