The term 'Beat Walker' refers to a police officer who patrols an assigned area on foot. The crossword solutions for this term are COP (3 letters), HIRAM (5 letters), and TOT (3 letters). COP stands for 'Constable On Patrol', which is a term used to describe a police officer who is on patrol duty. HIRAM is an acronym for 'Highway Incident Response and Management', which is a program that trains police officers in responding to highway incidents. Finally, TOT stands for 'Tactical Operations Team', which is a specialized unit of police officers trained in crowd control and other tactical operations.