Presidential aircraft are specially designed planes used to transport the President of the United States. The most famous of these is Air Force One, which is the official air traffic control call sign for any U.S. Air Force aircraft carrying the President. These aircraft are equipped with advanced communication systems, security features, and amenities to ensure the safety and comfort of the President and their staff. In addition to Air Force One, there are other aircraft used for presidential travel, including helicopters like Marine One. These aircraft provide quick transportation to and from locations, especially in emergencies. Overall, presidential aircraft play a crucial role in facilitating the President's domestic and international travel.