DEFINITIONS.

SEC. 2. [54 U.S.C. 100102 note] DEFINITIONS. In this Act: (1) Challenge fund.—The term “Challenge Fund” means the National Park Centennial Challenge Fund established in title I. (2) Director.—The term “Director” means the Director of the National Park Service. (3) Endowment.—The term “Endowment” means the Second Century Endowment for the National Park Service established by title II. (4) Secretary.—The term “Secretary” means the Secretary of the Interior. (5) Signature project or program.—The term “signature project or program” means any project or program identified by the Secretary as one that will help prepare the national parks for another century of conservation, preservation, and visitor enjoyment.