The Grand Canyon National Park entrance is blocked off on Tuesday, Oct. 8, 2013, in Tusayan, Ariz. The Grand Canyon remains closed to visitors because of the partial government shutdown. (AP Photo/Matt York)

Photo by: Matt York

The Grand Canyon National Park entrance is blocked off on Tuesday, Oct. 8, 2013, in Tusayan, Ariz. The Grand Canyon remains closed to visitors because of the partial government shutdown. (AP Photo/Matt York)