Thomas Lucatorto received his Ph.D. from Columbia for work on atomic structure. He has more than 125 publications and four patents, is a Fellow of the American Physical Society, and is the recipient of the Department of Commerce Silver Medal in 1980 and in 2013. He has been the leader of the Ultraviolet Radiation Group at NIST for three decades. That group provides accurate measurements in the spectral range from 4 nm to 400 nm, which include calibrations of all NASA and NOAA’s solar UV instruments and other optics used in astronomy, fusion plasma diagnostics, laser development, and EUV lithography.