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    The KC-46A Pegasus deploys the centerline boom for the first time Oct. 9, 2015. The boom is the fastest way to refuel aircraft at 1,200 gallons per minute. (Boeing photo/John D. Parker)

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    A KC-46 Pegasus took to the skies for its first flight at Paine Field in Everett, Wa., Sept. 25, 2015. (U.S. Air Force photo/Jet Fabara)

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    The KC-46A Pegasus performs its first-ever aerial refueling Jan. 24, 2016, passing 1,600 pounds of fuel to an F-16 Fighting Falcon. (Boeing photo/Paul Weatherman

What's New?

On November 3, 2017, the U.S. Air Force published a Notice of Availability and Notice of Public Hearings for the Draft Environmental Impact Statement (EIS) for the KC-46A Main Operating Base #4 (MOB 4) Beddown. The Notice of Availability initiated the public review period for the Draft EIS, which ends on December 18, 2017. Comments received during the public review period will be considered during development of the Final EIS. Please visit the About, Get Involved, and Provide Comments pages for more information. The Draft EIS is available on the Documents page for download and review.


Welcome to the U.S. Air Force’s website for the KC-46A Main Operating Base #4 (MOB 4) Beddown. This website is the U.S. Air Force’s online center for the public to learn about and become involved in the KC-46A MOB 4 Beddown Environmental Impact Statement (EIS) process. The U.S. Air Force encourages the public and interested parties to review the information and documents provided on this website and participate in the EIS process.