; past year; current year; budget year; budget year plus one; budget year plus two; budget year plus three; budget year plus four and beyond; and total cost) the actual or estimated appropriations, obligations, unobligated authority, and planned expenditures. (3) Updates The Under Secretary for Management shall submit quarterly updates to such report not later than 45 days after the completion of each quarter. The updates shall be submitted to the congressional homeland security committees (as such term is defined in section 830) and include the same information under paragraph (1) and (2) for any major acquisition program— (A) that has been newly established since the annual report was submitted; or (B) that has received approval for a revised acquisition program baseline. (b) Comptroller General reviews (1) Briefing Not later than three months after each annual report under subsection (a) is submitted, the Comptroller General of the United States shall brief the congressional homeland security committees (as such term is defined in section 830) on the contents of each such report, including observations on the accuracy of the information presented and any other risks or challenges the Department faces in managing its acquisition portfolio. (2) Review Not later than three years after submission of the first annual report under subsection (a), the Comptroller General of the United States shall evaluate and submit to the congressional homeland security committees a report on the reliability of the data used to prepare such reports. . (b) Clerical amendment The table of contents in section 1(b) of such Act is further amended by inserting after the item relating to section 839 the following new item: Sec. 840. Acquisition reports. . IV OTHER REFORMS 401. Quadrennial homeland security review (a) In general Section 706 of the Homeland Security Act of 2002 (as redesignated by this Act