The Skin of our Teeth: It's looking like the KC-135 fleet will need an expensive re-skinning circa 2018, Air Mobility Command boss Gen. Art Lichte said Thursday. The projection was actually made in 2000 by an independent study of airlifter longevity, but the study has proved remarkably prescient, he noted and added that the prediction still looks valid. As it is, the KC-135s need a $7 million depot maintenance every five years, but the cost and complexity of each visit is growing significantly, Lichte said. The re-skinning would be a "major re-build" and wouldn't buy very much in terms of extra years of use, since other aspects of the aircraft would still be Eisenhower vintage. Stepping up the pace at which the new KC-X tanker is bought would diminish the number of re-skins necessary, but Lichte restated the Pentagon's position that buying two different tankers at once—the only way to skip the re-skins entirely since the more aircraft would be available sooner—is unaffordable.