Cars travel on Ohio state Route 82 across a bridge over the Cuyahoga Valley National Park in Brecksville, Ohio, on May 1, 2012. Five men were arrested the previous night for conspiring to blow up the bridge. (Associated Press)

Photo by: Amy Sancetta

Cars travel on Ohio state Route 82 across a bridge over the Cuyahoga Valley National Park in Brecksville, Ohio, on May 1, 2012. Five men were arrested the previous night for conspiring to blow up the bridge. (Associated Press)