a mutually agreed upon date. (c) Definition of traumatic brain injury In this section, the term traumatic brain injury means a traumatically induced structural injury or physiological disruption of brain function as a result of an external force that is indicated by new onset or worsening of at least one of the following clinical signs immediately following the event: (1) Alteration in mental status, including confusion, disorientation, or slowed thinking. (2) Loss of memory for events immediately before or after the injury. (3) Any period of loss of or decreased level of consciousness, observed or self-reported. 10. Implementation of Inspector General recommendations to manage traumatic brain injury care (a) Implementation Not later than December 31, 2025, the Secretary of Defense shall implement the recommendations contained in the report of the Inspector General of the Department of Defense entitled, Evaluation of the DoD’s Management of Traumatic Brain Injury (DODIG–2023–059). (b) Briefing Not later than April 1, 2025, the Secretary of Defense shall provide to the Committee on Armed Services of the Senate and the Committee on Armed Services of the House of Representatives a briefing on the progress of the Secretary in carrying out the implementation required under subsection (a).