March 22 (UPI) -- The U.S. Air Force placed a $16.9 million order to Northrop Grumman to provide engine overhauls for the branch's KC-10 Extender aircraft.
The agreement with Northrop Grumman continues the Air Force's engine support projects for the tanker. Earlier in March, the branch awarded Kelly Aviation Center with a $1 billion KC-10 engine support deal.