An Asian man came in; Sokolov guessed Japanese or Korean. He was trim, well put together. He shoved his wallet and a phone into one of the pigeonholes. Sokolov, moving from one machine to another, walked past him and judged him to be of the same height. Shoe size was more difficult to judge at a glance. After wandering around the Fitness Center and taking an inventory of its machines and facilities, this man boarded an elliptical trainer and set it up for a half-hour program, then turned his attention to a magazine.