of supplementing ground-based midcourse defense elements with other, more distributed, elements, including both Aegis ships and Aegis Ashore installations with Standard Missile-3 Block IIA and other interceptors in Hawaii and at other locations for homeland missile defense. (3) Form The report required by paragraph (1) shall be submitted in unclassified form, but may include a classified annex. 5. Evaluation and evolution of terrestrial ground-based midcourse defense sensors (a) Findings Congress makes the following findings: (1) United States missile defense sensors are the unheralded backbone of the missile defense architecture of the United States, positioned to provide the Armed Forces with critical data needed to successfully intercept threats from rogue nations like Iran and North Korea. (2) The United States uses a wide variety of UHF, L-, S-, and X-band ground-based sensors and only a few infrared space-based sensors for early warning, tracking, and discrimination of ballistic missiles. (3) The United States currently has operational upgraded early warning radars (UEWRs) for homeland missile defense at Beale Air Force Base, California, Fylingdales, United Kingdom, and Thule Air Force Base, Greenland, and will soon add upgrade early warning radars at Cape Cod, Massachusetts, and Clear Air Force Station, Alaska. (4) Originally constructed in the 1970s, the COBRA DANE radar at Eareckson Air Station on Shemya, Alaska, provides critical information on missile defense threats to the Armed Forces. (5) The Long Range Discrimination Radar (LRDR), a new, land-based, S-band radar on Clear Air Force Station will begin to deliver persistent long-range discrimination, precision tracking, and hit estimation when construction completes on the radar by 2020. (b) Report to Congress (1) In general Not later than 90 days after the date of the enactment of this Act, the Director of the Missile Defense Agency, in coordination with the Secretary of the Air Force, shall submit to the congressional defense committees (as defined