Celebrity ambassadors help National Park Service mark 101st birthday

How do you top a centennial? The National Park Service marks its 101st birthday Friday amid a “Parks 101” campaign enlisting celebrities as ambassadors for the park system’s hidden gems.Parks 101 ambassadors have included cast members from the cable show “Queen Sugar” touring Chalmette Battlefield in Louisiana, and Olympic gymnast Dominique Dawes at the Frederick Douglass National Historic Site and other spots in Washington, D.C. Grammy-nominated singer-songwriter K