Built from the airframe of the Boeing C-97 Stratofreighter - itself derived from WWII-era Boeing bomber technology - the Aero Spacelines Guppy transformed surplus military transports into the largest cargo aircraft in the world. With its enormous bulbous fuselage, the Guppy was purpose-built to carry outsized cargo such as NASA's Saturn rocket stages during the Space Race, illustrating how wartime aviation engineering continued to shape aerospace innovation for decades after WWII ended. Project: 218190