Tomas released the Carrier Command: Gaea Mission FBX Converter on the BI forums.
Quote : We have created a tool that enables models, textures, and so on, to be modified and wiewed in the same way as you would see them in a game. Our Enforce workbench editor uses two kinds of formats:
The first is .txo, which can be manually edited in any text editor (e.g. Notepad++, PSPad, etc.).
The second is .xob, which is a final binarised format.