Office, including the National Department of Veterans Affairs History Center. (4) Public activities to mark the centennial described in subsection (a). (5) Such recommendations for legislative or administrative action as the Secretary may have with respect to the History Office and the centennial described in subsection (a). (c) Annual progress reports Not later than one year after the date on which the Secretary submits the report required by subsection (a) pursuant to such subsection and not less frequently than once each year thereafter until December 31, 2030, the Chief Historian of the Department of Veterans Affairs shall submit to the committees described in such subsection a report on the progress of the History Office.