Air Force One, the aircraft used by the U.S. president, is a modified Boeing 747-200B. It is approximately 232 feet (about 70.7 meters) long and has a spacious interior of about 4,000 square feet spread over three levels. It accommodates about 70 passengers plus a crew of 26, with specialized areas such as the president's suite, conference/dining room, medical suite, galleys for food preparation, work areas, and living quarters for staff and guests.