(Editor's Note: This story has been updated to reflect a statement from United Technologies.) United Technologies disclosed on Friday that the Justice Department has opened a criminal investigation into allegations Sikorsky and two of its subsidiaries overbilled the Navy on a contract to support T-34 and T-44 aircraft. According to a document filed by UTC with the Securities and Exchange Commission on Friday, the U.S. government last year filed a complaint in federal court alleging Sikorsky and subsidiaries Derco...