Following selection of its prevention plan, the community must begin to implement programs that meet its needs. In many communities, coalitions formed during the planning process remain involved in oversight; but the responsibility for running individual programs usually remains with local public or private community-based organizations. Running an effective research-based program often requires use of extensive human and financial resources and a serious commitment to training and technical assistance. Outreach efforts to attract and keep program participants interested and involved are important, especially with hard-to-reach populations. Research has shown that extra effort in providing incentives, flexible schedules, personal contact, and the public support of important community leaders helps attract and retain program participants.