This interview traces Brunk's career in engineering with the National Advisory Committee for Aeronautics (NACA), Lewis Research Center (formerly Lewis Flight Propulsion Laboratory), NASA and NASA Headquarters. The discussion begins with an overview of his family background and his education at Case Institute of Technology, followed by his work in supersonic aerodynamics for NACA. The interview primarily examines Brunk's role in and perceptions of the development of planetary ground-based astronomy during his tenure at NASA Headquarters, as Program Chief of Planetary Astronomy. Topics discussed include: telescope innovations at different observatories; problems and techniques in ground-based observation; exploration of Mars; the Planetary Patrol program at Lowell Observatory; his membership to the American Astronomical Society; and general perceptions of NASA's role in ground-based astronomy. Other affiliations and contacts discussed include: Jason Nassau, Nancy Roman, Urner Liddel, and Gerard Kuiper.