From Halopedia, the Halo wiki
Boglin Fields is a human corporation that manufactures fusion drives for warships of the UNSC Navy. Notably, the corporation produced the XR2 Boglin Fields: S81/X-DFR, the primary sublight engine utilized by UNSC Infinity.
- Halo 4: The Essential Visual Guide, page 228
- Halo 4: The Essential Visual Guide, pages 188-189