Inter-church coalitions are often formed on the basis of need and disappear when the need is met, but some are long-term. Coalitions differ from councils of churches because they are organized for churches and Christians to collaborate on specific tasks using denominational staff, rather than organized for churches to commit themselves to continuing dialogue, witness, and service. Examples of national coalitions in which the Episcopal Church shares resources of people and/or funds are Christian Ministry in the National Parks, Church Women United, Coordination in Development (CODEL), National Conference for Ministry to the Armed Forces, United Ministries in Higher Education, and Interfaith Cable Network (VISN). Coalitions are also formed in regions, such as the Appalachian Peoples Services Organization (APSO), internationally such as the World Student Christian Federation, and in dioceses.