This document discusses the three main service sectors that facilitate sports and recreation in communities - public, private, and non-profit. It provides examples of each sector: the public sector includes recreation centers run by municipal governments, parks, and beaches that provide public programs and spaces. The private sector consists of for-profit clubs and leagues. The non-profit sector involves volunteer-run organizations like a church open gym, Steve Nash Youth Basketball, and Special Olympics that provide programming through volunteers rather than paid staff. All three sectors create opportunities for physical activity, recreation, and coaching.