Air Force One is the official air traffic control call sign for a United States Air Force aircraft carrying the President of the United States. The phrase is often used to refer to specific aircraft designated to transport the president, which are currently two highly customized Boeing VC-25 aircraft, which are heavily modified versions of the Boeing 747-200B airliner. The term "Air Force One" has been used since 1953, when it was created as a temporary call sign for the aircraft carrying President Dwight D. Eisenhower during a trip to Europe. The call sign is used by the Secret Service and the Federal Aviation Administration to identify the aircraft and ensure its safety and priority handling. In Hebrew, it is known as כלי טיס אחד של חיל האוויר (Kli Tays One Shel Hayal HaAvir). In French, it is referred to as Air Force Un, and in Spanish, it is called Aerolínea Uno. The aircraft serves as a mobile command center and communications hub, equipped with advanced technology to ensure the president's safety and connectivity. It can refuel mid-air and has a range of over 7,800 miles (12,500 kilometers), allowing it to reach virtually any destination on Earth.