; and (C) the study conducted under section 750 of the William M. (Mac) Thornberry National Defense Authorization Act for Fiscal Year 2021 ( Public Law 116–283 ; 134 Stat. 3716). (c) Report At the conclusion of the study required under subsection (a), the National Academies shall submit to the Secretary and to the Committees on Veterans’ Affairs of the House of Representatives and the Senate a report containing the results of the study described in subsection (b). (d) Covered individual defined In this section, the term covered individual means an individual who served on active duty in the Army, Navy, Air Force, or Marine Corps as an aircrew member of a fixed-wing aircraft, including as a pilot, navigator, weapons systems operator, aircraft system operator, or any other crew member who regularly flew in a fixed-wing aircraft.