High Quality Content by WIKIPEDIA articles! Rex Joseph Walheim (born 10 October 1962, in Redwood City, California) is a United States Air Force officer and a NASA astronaut. Walheim considers San Carlos, California his hometown. He is married to Margie Dotson, formally of Villa Park, California. They have two children. He enjoys snow skiing, hiking, softball and football. His father, Lawrence M. Walheim, Jr., resides in Roseville, California. His mother, Avis L. Walheim is deceased.