Bill and Merri Sue Carter are father and daughter. Merri Sue is an Astronomer at the US Naval Observatory, where she has worked studying polar motion and variations in the rate of the rotation of the Earth for 15 years. Bill Carter is an Adjunct Professor in the Civil Engineering Department, University of Florida. As a geodetic officer in the US Air Force, and as a research geodesist for 20 years at the National Oceanic and Atmospheric Administration, Bill worked on just about all facets of geodetic astronomy.