The main purpose of this legislation, known as the McCarty and Heideman Air Safety Enhancement Act, is to enhance safety in low-altitude airspace. It specifically aims to require the Federal Aviation Administration (FAA) to review and update its regulations and policies to better address safety concerns related to low-altitude flying, particularly regarding temporary obstructions like slacklines and wires. Key provisions of the legislation include a mandate for the FAA Administrator to conduct a thorough review of existing regulations and policies within six months of the law's enactment.