I heard a soft rumble above my head. As I looked up into a clear blue sky, I saw nothing but blue. The sound intensified, growing louder and louder, coming closer and closer. A stream of what looked like a single line of clouds suddenly marred the sky. Then a boom echoed all around me. The white line hung in air, the only evidence left behind by the Unidentified Flying Object.
(Ok so it's 6 lines.....Shush, if you didn't say anything they wouldn't have noticed.)