New Planes Are the Norm
The consistent ordering of new planes to serve as Air Force One is not a new concept. From the first version, every so many administration would put in an order for the newer, faster, shinier model. The entire Air Force, not just Air Force One, has an ongoing order at one time or another for updated aircraft. The problems that usually arise are based within the technical requirements the new aircraft need to provide. Since taking over the acquisition of new aircraft, and the specific requirements each newer version is required to have, the Pentagon is constantly being dogged by one set back or another. After years of budget battles, the Air Force finally announced it would hire Boeing, the only remaining manufacturer of large aircraft, to deliver future orders of planes needed.
Image: The Aviationist