; 10 U.S.C. 2431 note) is amended by striking ballistic missile threat and inserting ballistic, cruise, and hypersonic missile threats . (d) Redesignation requirement Not later than the date on which the President submits to Congress pursuant to section 1105 of title 31, United States Code, the annual budget request of the President for fiscal year 2021, the Secretary of Defense shall, as the Secretary considers appropriate, redesignate all strategies, policies, programs, and systems under the jurisdiction of the Secretary to reflect that missile defense programs of the United States defend against ballistic, cruise, and hypersonic missiles in all phases of flight. 3. Acceleration of the deployment of persistent space-based sensor architecture (a) Findings Congress makes the following findings: (1) The Missile Defense Agency currently operates the Space Tracking and Surveillance System-Demonstration (STSS–D), a two-satellite constellation for testing purposes, which uses sensors capable of detecting visible and infrared light and serves as an experimental space tracker for the ballistic missile defense system. (2) Conceptually developed in 2009, the Precision Tracking Space System (PTSS) would have provided the persistent space-based tracking of ballistic missiles, including object characterization and discrimination, and would have also supported homeland, regional, and theater missile defense. (3) Projected to enter orbit in 2018, the Missile Defense Agency and the Applied Physics Laboratory of Johns Hopkins University is currently conducting a Space-Based Kill Assessment (SKA) experiment, a network of small sensors hosted on commercial satellites, used to collect the energy signature of the impact between a ballistic missile threat and an interceptor from the ballistic missile defense system. (4) Section 236 of the National Defense Authorization Act for Fiscal Year 2014 (127 Stat. 715