Fenty championed development efforts including renovating libraries, parks and recreation centers. Under Fenty, 16 neighborhood and school playgrounds were opened and nine play courts and fields were completed. The District's largest shopping center, the DC USA Shopping Center, and the Camp Simms retail development were opened, and thousands of affordable housing units were established or renovated. The "Housing First" program to provide permanent supportive housing for the district's homeless was begun. The backlog of Child Protective Services (CPS) investigations was reduced by improving the retention of social workers, building an experienced leadership team, and increasing the recruitment of social workers to fill vacancies. Additionally, the Fenty administration improved the delivery of emergency medical services and expanded health care coverage for the uninsured. It also finalized the sale of Greater Southeast Community Hospital (now United Medical Center) in a public-private partnership that kept the facility open.