Donald S. Lopez, Sr. (July 15, 1923 – March 3, 2008) was a U.S. Army and U.S. Air Force fighter and test pilot and until his death the deputy director of the Smithsonian National Air and Space Museum. In 1948 he married Glindel Barron, sister of Florida State Senator Dempsey Barron.Born in Brooklyn, New York, Lopez showed an interest in aviation at an early age. He often rode his bike to Floyd Bennett Field where he occasionally got free flights from a family friend.