Nicholas Crasta, right, and Cordale Katzenmeyer, both Boy Scouts with Troop 102, clear brush on one of the hiking trails at the Vicksburg National Military Park Saturday. Boy Scouts and Girl Scouts from the area volunteered for National Park Lands Day. Nicholas, 12, is the son of Colin and Dannette Crasta; and Cordale, 12, is the son of Charles and Brandy Katzenmeyer.