The watchdog wing of Congress has quietly launched an investigation into the integrity" of the Pentagon's whistleblower protection program. The Government Accountability Office, which serves as the investigative arm of Congress, has been looking into the extent to which Department of Defense whistleblower policies ... reassure employees of their rights to raise concerns "without fear of reprisal." The investigation will also likely target senior Pentagon officials accused of destroying evidence that would have exculpated former senior NSA official Thomas Drake, who raised internal complaints about what he believed to be NSA misconduct and waste before ultimately approaching journalists. Rather than having his concerns acknowledged, Drake spent months fighting charges against him under the Espionage Act. His career in the intelligence community was ended. "Bureaucratic abuses of power are the primary reason otherwise circumspect national security whistleblowers leak to the media. It is too dangerous to work within an untrustworthy system," Tom Devine, legal director of the Government Accountability Project, wrote in a statement. John Crane, formerly the assistant inspector general in the Pentagon, revealed his role in attempting to protect Drake's identity and investigate the document destruction involved in his case last May - an effort he claims cost him his job. The implications of the investigation may eventually be important for evaluating the actions of former NSA contractor Edward Snowden.