Question: What career did Klaus-Dietrich Flade and Pedro Duque both pursue?

Context articles: STS-95
Pedro Nuño Colón de Portugal, 6th Duke of Veragua
Klaus-Dietrich Flade
Pedro Fernández de Velasco, 3rd Duke of Frías
Duke of Lafões
Pedro Duque
Pedro Duque de Rivera
Pedro Téllez-Girón, 8th Duke of Osuna
Pedro Téllez-Girón, 9th Duke of Osuna
Pedro Duque y Cornejo

STS-95 was a Space Shuttle mission launched from Kennedy Space Center, Florida on 29 October 1998, using the orbiter "Discovery".
 It was the 25th flight of "Discovery" and the 92nd mission flown since the start of the Space Shuttle program in April 1981.
 It was a highly publicized mission due to former Project Mercury astronaut and United States Senator John H. Glenn, Jr.'s return to space for his second space flight.
 At age 77, Glenn became the oldest person, to date, to go into space.
 This mission is also noted for inaugurating ATSC HDTV broadcasting in the U.S., with live coast-to-coast coverage of the launch.
 In another first, Spain's Pedro Duque became the first Spaniard in space.
Pedro Nuño Colón de Portugal y Castro, (Madrid, Spain, 13 December 1628 – December 8, 1673, Mexico City) was viceroy of New Spain from December 8, 1673 to December 13, 1673.
 He was 6th Duke of Veragua, 6th Marquis of Jamaica and 6th Count of Gelves (in full, "Don Pedro Nuño Colón de Portugal y Castro, Duque de Veragua, Marqués de la Jamaica y de Villamizar, y Conde de los Gelves").
Klaus-Dietrich Flade (born August 23, 1952) is a German pilot and former German Aerospace Center astronaut who visited the Mir space station in 1992 aboard the Soyuz TM-14 mission, returning to Earth a week later aboard Soyuz TM-13.
Pedro Fernández de Velasco, 3rd Duke of Frías (c. 1485 – 10 November 1559), Grandee of Spain (in full, Spanish: "Don Pedro Fernández de Velasco y Tovar, tercer duque de Frías, quinto conde de Haro, noveno Condestable de Castilla, mayorazgo y señor de la Casa de Velasco" ) was a Spanish nobleman.
Duke of Lafões (in Portuguese "Duque de Lafões") was a Portuguese title of nobility created under the decree of February 17, 1718, of King John V of Portugal and granted to his nephew, "Dom" Pedro Henrique de Bragança, son of the Infante Miguel de Bragança, an illegitimate son of King Peter II of Portugal and Anne Armande Pastre de Verger, though Pedro's mother, Luisa Casimira de Sousa Nassau e Ligne was the first to use this title.The title was later passed on to his brother, João Carlos de Bragança e Ligne de Sousa Tavares Mascarenhas da Silva, the most famous Duke of this title.
Pedro Duque Duque (born 14 March 1963) is a Spanish astronaut and a veteran of two space missions.
Pedro Duque de Rivera (died December 1594) was a Roman Catholic prelate who was appointed Bishop of Panamá (1594).
Pedro Zoilo Téllez-Girón y Pérez de Guzmán, 8th Duke de Osuna, Grandee of Spain, (in full, Spanish: "Don Pedro Zoilo María Bienvenido Juan Francisco Xavier Téllez-Girón y Pérez de Guzmán el Bueno, octavo duque de Osuna, octavo marqués de Peñafiel, décimo segundo conde de Ureña, señor de la villa de Morón de la Frontera, Archidona, El Arahal, Olvera, Ortejicar, Cazalla de la Sierra, Tiedra, Gumiel de Izán y Briones, Camarero mayor del Rey, Notario mayor de los Reinos de Castilla, Grande de España de 1ra clase, teniente general de los RE, coronel del Regimiento de Reales Guardias de infantería española y director general de ella, capitán de Guardias Albarderos de la persona de SM, del Supremo Consejo de Guerra, gentilhombre de cámara con ejercicio de Fernando VI y Carlos III, embajador extraordinario cerca del emperador de Alemania José II y en las Cortes de Nápoles, Parma y Turín, caballero del Toisón de Oro, gran cruz de la Orden de Carlos III" ), (27 June 1728 – 1 April 1787), was a Spanish nobleman.
Pedro de Alcántara Téllez-Girón, 9th Duke of Osuna, Grandee of Spain, (in full, Spanish: "Don Pedro de Alcántara María Cayetano Ciriaco Rafael Domingo Vicente Téllez-Girón y Pacheco, noveno duque de Osuna, décimo marqués de Peñafiel, conde de Fontanar, décimo tercér conde de Ureña, señor de la villa de Morón de la Frontera, Archidona, El Arahal, Olvera, Ortejicar, Cazalla de la Sierra, Tiedra, Gumiel de Izán y Briones, Grande de España de 1ra clase, Camarero mayor del Rey, Notario mayor de los Reinos de Castilla, teniente general de los Reales Ejércitos, coronel del Regimiento de Reales Guardias Españoles y su Director general, miembro del Supremo Consejo de la Guerra, embajador extraordinario en Viena, 24 de la Real academia (10.7.1787), gentilhombre de cámara con ejercicio de Carlos III y de Carlos IV, caballero del Toisón de Oro (4.4.1794), Gran Cruz de la Orden de Carlos III" ), (8 August 1755 – 7 January 1807), was a Spanish nobleman.
 He led Spanish troops during the French Revolutionary Wars.
Pedro Duque y Cornejo (1677–1757) was a Spanish Baroque painter and sculptor of the Sevillian school of sculpture, a disciple of his grandfather Pedro Roldán.