Stephen L. Anderson received an B.A. (Honors) degree in mathematics from the University of Utah, Salt Lake City, UT, USA, in 1975. He earned a Ph.D. degree in mathematics from Brown University, Providence, RI, USA, in 1980. From 1980 to 1983, he was Acting Assistant Professor of Mathematics with the University of Washington, Seattle, WA, USA, and from 1983 to 1986, he was Assistant Professor of Mathematics and Computer Science at Wilkes University, Wilkes-Barre, PA, USA. From 1987 to 1993, he worked at Daniel H. Wagner, Associates, primarily on multitarget tracking applications. He joined Metron, Inc., in 1993, where he is currently Senior Research Scientist. At Metron, his work has focused primarily on target tracking and search applications.