The McCarty and Heideman Air Safety Enhancement Act requires the Federal Aviation Administration to review and update its regulations and policies governing low-altitude airspace safety, with a specific focus on hazards like slacklines, tightropes, and similar temporary obstructions. Within six months of the law's enactment, the FAA must consult with stakeholders including helicopter operators, air medical services, general aviation pilots, and agricultural aviation operators to identify safety improvements. The review must examine whether current marking and lighting requirements are clear and effective, whether aeronautical information can be better integrated into flight planning tools, and how coordination with federal and state land management agencies can be improved. If the review finds that current policies are inadequate, the FAA must update its regulations or guidance within one year of enactment. Finally, the FAA must brief Congress within 90 days of completing the review with its findings and any legislative recommendations needed to enhance low-altitude airspace safety.