Our Mission, Our Vision and Our Values Mission: our purpose To support and empower individuals with disabilities in gaining and maintaining the skills and resources needed to maximize their potential for independence and inclusion in their community both vocationally and socially. Vision: our goal NHSSI will be successful in expanding opportunities and resources for persons with disabilities and their families in the Prince George’s County. Through person centered planning, the agency will support individual life choices, dignity and opportunities for all persons as fully included, contributing and productive members of society.