I do not own the Thunderbirds, and I am making no profit from this story.

Scott Tracy's eyes are like the sky.

If you heard that, you'd think, "Oh, he must have blue eyes." Yes, his eyes are blue…but that one word cannot encapsulate the blueness of Scott's eyes.

On a normal day, Scott's eyes are like the spring sky after a long winter – rich and vibrant, full of energy and life; they are a crisp, clear blue. People tend to stand up a little straighter when he walks past. They follow him with their gaze until he's out of sight. He doesn't notice their attention.

The sky becomes overcast sometimes, and so do Scott's eyes. When he's weary – after a long rescue or a sleepless night – it's as if a veil of clouds has drifted in front of the sun, making you shiver a little. At these times, his eyes are steel blue, cool and quiet.

It's when the thunderstorms roll across Scott's eyes that his brothers know to hide – either from Scott, or perhaps behind him, depending on why he's angry. When this happens, the roiling emotions obscure the blue until his eyes are almost gray – and you can practically see the lightning bolts shooting out. These eyes make grown men quake in their boots.

And then, suddenly, the thunderclouds are pulled back like a curtain, and Scott smiles. Your gaze is drawn straight to those blue, blue eyes, and you find yourself lost in the azure depths. In those eyes are contained the vastness of the heavens and the warmth of the summer sun, and you realize something.

You realize that when Scott Tracy smiles, his eyes are the sky.