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Boeing Wichita completes maintenance of E-4B

Boeing Wichita has completed 11 months of maintenance on an E-4B National Airborne Operations Center aircraft.

It delivered the aircraft back to the Air Force last week.

The plane is a modified Boeing 747-200 and serves the president, secretary of defense and chairman of the Joint Chiefs of Staff.  It also was designed to serve as a survivable command post for the control of U.S. forces in the event of a conflict, including nuclear war.

It's one of a fleet of four E-4Bs stationed at Offutt Air Force Base in Nebraska.

The upgrade included an extensive scheduled depot maintenance refurbishment, including repairs and system upgrades.

"The E-4B is the most advanced communications aircraft in the world and on alert 24/7," said Steve Wade, general manager of Boeing Global Transport and Executive Systems in Wichita. "When they're called upon, it's our job to ensure they are ready."