(Editor's Note: This article has been updated to include additional quotes from Pentagon officials and lawmakers.) While the Air Force has made more than 230 changes to its much-anticipated KC-X request for proposals, the requirements for the next-generation tanker have not been significantly modified, according to senior Pentagon officials and briefing slides. The decision sparked mixed reactions from industry, with Boeing criticizing one aspect of the solicitation, while some Northrop Grumman supporters also cried foul. Deputy Defense Secretary William Lynn,...