Interview with David G. Hitlin, Professor of Physics at California Institute of Technology. Hitlin discusses his thesis work on high-resolution muonic X-ray studies with his advisor and mentor Chien-Shiung Wu, and his subsequent transition to elementary particle physics at SLAC. He relates his experiences with kaon physics as a member of Mel Schwartzs group at SLAC and Stanford. As a member of the Richter group at SLAC he worked on the Mark II experiment and then founded the Mark III experiment at SPEAR. After moving to Caltech in 1979, he worked on the SLD experiment at the SLC and then as founding Spokesman of the BABAR experiment at PEP-II. The interview ends with a discussion of his current involvements with the Fermilab experiment Mu2e and the nascent SLAC experiment LDMX.