Jetstream.

You're a jetstream.
No one really knows what you carry
We don't know where you're going or why
but when we look to the sky
there's your trail, —
unmistakable, —
scintillating
with the light that bursts along the way;

Then time passes, like it almost always does
and your tracks dissipate across the canvas
They scatter, —
traverse, —
breach, —
touch
But those of us who knew you know
they know —
no, that's no ordinary cloud.