A whisper that is too far away, too far to be heard so it's lost in silence.
A fragment disconnected from a sentence, disconnected from thought forgotten and buried by other words.
A child who is left behind, struggling to keep up, stumbling and reaching out but is never acknowledged.
What's left after winds leave destruction in thier wake, ripping away the roots that hold things in place, leaving spaces that can never be filled.
Or
It's just a group of water droplets frozen before their prime, clumped together and 18,000 feet in the air.