Stennis Space Center (NASA/DoD)

NASA/DoD federal complex on the Mississippi Gulf Coast (near Diamondhead / Bay St. Louis, MS — greater New Orleans orbit). NASA's primary ROCKET PROPULSION TEST site: tested the Space Shuttle Main Engines (today SLS / RS-25). Major Navy/DoD tenant base too — Naval Oceanographic Office incl. BROWN-WATER (littoral / riverine) GIS analysis, vector + point; and Naval Special Warfare / SEAL & special-boat training. Operator-attested 2026-06-26.