The National Reconnaissance Office (NRO) Acquisition Manual is hereby amended by adding new sub-part N4.21, Prohibition on Contracting for Certain Telecommunications and Video Surveillance Services or Equipment, to implement a provision of the 2019 National Defense Authorization Act prohibiting the procurement and use of covered equipment and services produced or provided by Huawei Technologies Company, ZTE Corporation, Hytera Communications Corporation, Hangzhou Hikvision Digital Technology Company, and Dahua Technology Company. New provision N52.204-016, Representation Regarding Certain Telecommunications and Video Surveillance Services or Equipment, is prescribed for use in all solicitations in lieu of FAR provision 52.204-24, and new clause N52.204-017, Prohibition on Contracting of Certain Telecommunications and Video Surveillance Services or Equipment, is prescribed for all solicitations and contracts in lieu of FAR clause 52.204-25. These revisions are effective immediately, and will be incorporated into NRO Acquisition Circular 2019-03.