UPDATE 1-Pentagon says classified data on U.S. F-35 jet fighter program remains secure
January 20, 2015 at 15:57 PM EST
WASHINGTON, Jan 20 (Reuters) - The Pentagon on Tuesday said classified data about the $399 billion F-35 fighter jet program remains secure, despite fresh documents released by NSA whistleblower Edward Snowden last week which said China stole "many terabytes" of data about the jet.