The Chicago Housing Authority Police Department (also known as the CHAPD) was created as a supplement to the Chicago Police Department (CPD), to provide dedicated police services to the residents of one of the nation's most impoverished and crime ridden developments for low-income housing. The CHAPD accomplished their daily goals by utilizing "community oriented policing techniques and aggressive vertical patrol" of all Chicago Housing Authority public housing projects throughout the inner city of Chicago, Illinois and some suburban areas.