The Metro Police were the third largest police agency in New England with over six hundred officers working primarily throughout Metropolitan Boston. In addition to patrol functions the Metro Police provided tactical assistance to area cities and towns in the form of regional SWAT teams, the Marine Unit and tactical operations units. Examples include Tactical Officers assigned to the city of Boston during court ordered school desegregation, assignment as the primary security agency for the Department of State with the responsibility of providing security and escorts for visiting dignitaries and annual assignments to assist cities and towns during the Boston Marathon.