SDG&E and SoCalGas have applied to the California Public Utilities Commission to build a new natural gas pipeline from Rainbow through the Marine Corps Air Station at Miramar to Mission Valley to replace an aging and potentially dangerous line, also boosting capacity and reliability for the region.  But Miramar’s commanding officer is opposing the project on military land—and instead wants to route the pipeline through Mission Trails Regional Park, East Elliott, and Goodan Ranch, including a large pipeline under heavily populated Santee neighborhoods and major roadways including a State Route 52 interchange.