S. D. MILLER AND ASSOCIATES P.L.L.C.

S. D. Miller and Associates, PLLC is a small R&D firm based in Flagstaff, Arizona specializing in advanced thermal protection systems and high-temperature insulation materials for aerospace applications. Led by Steve D. Miller, the company has conducted decades of government-funded research in Opacified Fibrous Insulation (OFI) as a replacement for Multi-Layer Insulation on hypersonic vehicles, with funding from NASA and the Department of Defense. The firm is the parent organization of Miller Scientific, Inc. and HeetShield, Inc., which commercializes its thermal insulation technologies.