Asked to comment on the draft report on F-35 repairs, Navy Cmdr. Patrick Evans, a spokesman for Lord, said in an email that Defense Secretary Jim Mattis "has made it clear that the department must focus on doing business more efficiently and cost effectively. To that end, we will review the GAO's findings, make the appropriate responses directly to the GAO, and continue to work with our partners for the good of the warfighter and taxpayer money."