 There is an inside joke printed on some of the crates in the cargo  bay. Some of the crates have the message "Reusable Container: Do Not  Destroy" printed on them (they are visible behind River after the  Reaver has been shot). The original set for the ship, from the show  _"Firefly" (2002)_ (qv) was destroyed (even though creator  Joss Whedon (qv) swore hed make use of it again), and therefore  could not be reused for the movie (the set had to be rebuilt from  scratch).