Requires the Secretary of Defense, working with the FAA Administrator, to study the cost and feasibility of equipping all Department of Defense fixed‑wing and rotary‑wing aircraft that operate in busy domestic airspace with air‑to‑air collision detection systems. The Secretary must deliver the study results, recommendations, and a timeline to the appropriate congressional committees within 180 days of enactment; the law also defines key terms used in the study (types of collision systems and what counts as highly trafficked domestic airspace).