2235.

Down the hall, he walked, with a gait steady and quick, urgent but unharried, steps muffled by the carpet, hoping for the click of soles on terrazzo, then a voice behind him, or footsteps, a sound, right heel to his left heel, raising up onto his toes, a quick pivot, a hello to those once behind him, never stopping, just walking backwards while talking, another pivot after the same sequence of moves in reverse, a few steps more, a sharp turn around the corner, and gone.