The returnshuttles-0.4.zip file you have requested: The Outdated Abyss / Return Shuttles - 265.89kb is not available. Perhaps try browsing all files for the game Star Trek: Bridge Commander and upload any files you want to share or are missing. This is the only information we could locate:
This is a Return Shuttles mod by SimRex. It pretty much speaks for its self Return Shuttles".