government concerned and the Secretary, including the following: (1) In Virginia: (A) Fort Ward, City of Alexandria. (B) Fort C.F. Smith, Arlington County. (C) Fort Ethan Allen, Arlington County. (D) Fort Willard, Fairfax County. (2) In Maryland: Battery Bailey, Montgomery County. 5. Possible inclusion of additional areas (a) Affiliation authority Any site associated with the Civil War defenses of Washington that is owned by a private individual or organization or a unit of local government in the District of Columbia, Virginia, or Maryland, other than those listed in section 4, that the Secretary determines is eligible for affiliation with the National Historical Park, may be affiliated with the National Historical Park pursuant to a cooperative agreement entered into between the site owner and the Secretary. The Secretary may purchase such properties from willing sellers, subject to the availability of private sector donated funding or appropriations. (b) Consent required No non-Federal property may be included in the National Historical Park without the written consent of the owner of the property. (c) Prohibition on use of condemnation The Secretary may not acquire by condemnation any land or interest in land under this Act or for the purposes of this Act. (d) Consultation and public participation The Secretary shall consult with interested officials of State governments and units of local government, representatives of interested organizations, and interested members of the public before executing a cooperative agreement under this section or section 7(d). 6. National Civil War History Education Center Report (a) In general In furtherance of and consistent with section 2, the Secretary shall study and consider creative and cost-effective ways to facilitate the storied history of the Civil War for both the North and the South, including the history of the defenses of Washington and the Shenandoah Valley Campaign of 1864, being assembled, arrayed, and conveyed for the benefit of the public for the knowledge,