title. Sec. 1822. Definitions. Sec. 1823. Prohibition on procurement of covered unmanned aircraft systems from covered foreign entities. Sec. 1824. Prohibition on operation of covered unmanned aircraft systems from covered foreign entities. Sec. 1825. Prohibition on use of Federal funds for procurement and operation of covered unmanned aircraft systems from covered foreign entities. Sec. 1826. Prohibition on use of Government-issued purchase cards to purchase covered unmanned aircraft systems from covered foreign entities. Sec. 1827. Management of existing inventories of covered unmanned aircraft systems from covered foreign entities. Sec. 1828. Comptroller General report. Sec. 1829. Government-wide policy for procurement of unmanned aircraft systems. Sec. 1830. State, local, and territorial law enforcement and emergency service exemption. Sec. 1831. Study. Sec. 1832. Exceptions. Sec. 1833. Sunset. Subtitle C—Unidentified Anomalous Phenomena Sec. 1841. Unidentified anomalous phenomena records collection at the National Archives and Records Administration. Sec. 1842. Review, identification, transmission to the National Archives, and public disclosure of unidentified anomalous phenomena records by government offices. Sec. 1843. Grounds for postponement of public disclosure of unidentified anomalous phenomena records. Subtitle D—World Trade Center Health Program Sec. 1851. Flexibility and funding for the World Trade Center Health Program. Sec. 1852. Extension of certain direct spending reductions. Sec. 1853. Medicare improvement fund. Division B—Military Construction Authorizations Sec. 2001. Short title. Sec. 2002. Expiration of authorizations and amounts required to be specified by law. Sec. 2003. Effective date. Title XXI—Army Military Construction Sec. 2101. Authorized Army construction and land acquisition projects. Sec. 2102. Family housing. Sec. 2103. Authorization of appropriations, Army. Sec. 2104. Extension of authority to use cash payments in special account from land conveyance, Natick Soldier Systems