The Janitor Felt Invisible to Georgetown Students, Until One Changed His Life

Every night, they had the same routine.  The Georgetown University business student would settle in for his cram session — soda, chips, books lined up.  And the janitor would come in to start his night shift — polishing each of the windows in the study room, moving amid all those books and chips and sodas. Invisible.  A nod one night. A hello the next.