; (iv) public-facing application programming interfaces and online tools; (v) automatic frequency coordination systems; (vi) spectrum enforcement requirements; (vii) listen-before-talk; (viii) environmental sensing capabilities; and (ix) electromagnetic spectrum compatibility analyses. (3) Establishment of sharing test bed Not later than 15 months after the date of the enactment of the Studying How to Harness Airwave Resources Efficiently Act of 2019 , the Assistant Secretary, in consultation with the Commission, shall, as part of the strategy proposed under paragraph (1), establish at least one test bed to demonstrate the potential for automated technologies to facilitate the sharing of the same covered electromagnetic spectrum by more than one Federal entity. (4) Updates to strategy Not later than 1 year after the strategy under paragraph (1) is proposed, and annually thereafter, the Assistant Secretary shall update such strategy. (c) Report Not later than 18 months after the date of the enactment of the Studying How to Harness Airwave Resources Efficiently Act of 2019 , and annually thereafter, the Assistant Secretary, in consultation with the Commission, shall submit to the Committee on Energy and Commerce of the House of Representatives and the Committee on Commerce, Science, and Transportation of the Senate a report containing— (1) the results of the program established under subsection (a)