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Amazon blames "improper pressure from President Donald J. Trump, who launched repeated public and behind-the-scenes attacks to steer the JEDI Contract away from [Amazon Web Services] to harm his perceived political enemy-Jeffrey P. Bezos, founder and CEO of AWS's parent company, Amazon.com, Inc.," the filing reads.
JEDI stands for Joint Enterprise Defense Infrastructure.
"My view is that if big tech is turning their back on the Department of Defense, this country is in big trouble," Bezos said at the Reagan National Defense Forum in Simi Valley, California, on Saturday.
Department of Defense technology official Dana Deasy insisted in October that neither the president nor the White House didn't manipulate the outcome in any way.
The JEDI contract is a winner-take-all job that is valued at about $10 billion. It is intended to help the military upgrade and transfer classified data.
FOX Business' Brittany De Lea contributed to this report.