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The funds were moved to a budget dedicated to updating the nation's ground-based nuclear missiles, and Air Force officials said that at least some of the funds for the renovations will come from the nuclear modernization project.

Among the improvements to the plane are upgrades to its communications systems and engines, as well as the addition of antimissile systems.

In addition, U.S. intelligence must identify and remove any covert surveillance devices that Qatar may have placed in the walls of the plane.