Pierre Sokolsky and Gordon Thomson are both emeritus at the Department of Physics and Astronomy of the University of Utah, where Sokolsky was a Distinguished Professor and Thomson held the Jack W. Keuffel Chair in Experimental Astrophysics. Both were co-spokespersons of the High Resolution Fly's Eye (HiRes) and the Telescope Array experiments. Sokolsky played an important role in the pioneering Fly's Eye experiment and is the recipient of the American Physical Society's Panofsky Prize for the development of the air-fluorescence technique for the study of ultra-high energy cosmic rays.