Hey! My answer made a lot of sense!

Anyway...

Flowing and ceasing
Crisp and clear
Into the crest
From the high point near
Sweeping the skies
As if from a story
Long and then vacant
In fleeting glory
Only a moment
Can it be seen
Must've been purged
Somewhere off screen
It's everywhere, then gone
In the blink of an eye
In a swift costume change
Worthy of a spy

What say you?