Zooming across the sky at Mach 1, what you are seeing is the bullet-shaped single rocket-engined aircraft that first broke the sound barrier in level flight; nicknamed Glamorous Glennis. After a moment of testing her airspeed, she glides and lands on the airfield to greet.

The sky's the limit! I am Bell X-1, first of the X-planes, the foundation of all U.S experimental rocket and non-rocket planes, nice to meet ya.