User blog comment:IceFireWarden0/Speculations for Season 11/@comment-89.201.139.142-20130719091004/@comment-198.45.201.206-20130719192725

3 possiblities for Caboose's object.

1.  A survivor of the ship crash. I know some wreckage survivors can survive a few days, heard the recent news about the building collapse?

2.  Maybe a piece of equipment still active, making a curious noise.

3  The ship's AI, if it had one.