II 118th CONGRESS 2d Session S. 4109 IN THE SENATE OF THE UNITED STATES April 11 (legislative day, April 10), 2024 Ms. Warren (for herself, Ms. Ernst , Mr. Tillis , Mr. King , Mr. Kaine , Mr. Scott of Florida , Ms. Hirono , Mrs. Gillibrand , Ms. Duckworth , Mr. Cardin , Ms. Collins , and Mr. Mullin ) introduced the following bill; which was read twice and referred to the Committee on Armed Services A BILL To amend title 10, United States Code, to clarify roles and responsibilities within the Department of Defense relating to subconcussive and concussive brain injuries and to improve brain health initiatives of the Department of Defense, and for other purposes.