The President of the United States must be ready to travel anywhere in the world on a moment’s notice. Fortunately, modern Presidents have access to a variety of transportation options, including flying aboard Air Force One. Strictly speaking, the term “Air Force One” is used to describe any Air Force aircraft when the President is on board, but since the middle of the 20th century, it has been standard practice to use the title to refer to specific planes that are equipped to transport the Commander-in-Chief.
