In my first job out of graduate school, I worked for the Operations Evaluation Group (OEG) of the Center for Naval Analyses doing operations research for the Navy. I moved to UC Davis in 1980 with the intention of doing OEG-style work, but with applications to fisheries and agriculture, and to UC Santa Cruz in 1996. I retired from formal teaching and administrative work in 2013 but continue an active research program. I am broadly interested in using mathematical methods to solve problems that arise in biology (especially ecology, evolution, and behavior) and work in what Donald Stokes called, in a wonderful book of the same name, Pasteur's Quadrant of use-inspired basic research, where a search for fundamental understanding is motivated by an important applied problem.