Party affiliation: Republican
Sergio Fernando Plaza, American civil and military engineer, construction and real estate management consultant. Recipient Outstanding Services award Department Defense, 1970. Member National Society Professional Engineers, American Society of Civil Engineers, Society of America Military Engineers (president El Paso 1983), Texas Society Professional Engineers.
Registered professional engineer, Texas. Registered public surveyor, Texas Instrument man Texas Highway Department, El Paso, 1955-1956. Geodesist White Sands Missile Range (New Mexico), 1957-1959, civil engineer, 1960-1965, civil engineer design and construction, 1966-1973.
Civil engineer design, construction and operations management United States Army Directorate of Engineering and Housing, Fort Bliss, Texas, since 1974. Member committee development pavement design standards engineering department City of El Paso.
Denomination: Roman Catholic