The whistleblowers below are not all protected by the current Whistleblower Protection Act, which does not cover federal employees who work at certain national security agencies, in certain scientific or research capacities, nor does it extend to private contractors. The whistleblower legislation circulating in the House and Senate aims to protect many of the whistleblowers exempted from current law.
Frank Terreri was a federal air marshal who disclosed serious security problems in the post-9/11 Air Marshal Service. Superiors took his gun and badge and opened several investigations against him. He was reinstated one day after the ACLU filed a first amendment suit.
Miscellaneous Rick Piltz was a senior official with the U.S. Climate Change Science Program who blew the whistle on a White House official—a former petroleum lobbyist—who was altering scientific reports to reflect administration views. He resigned out of frustration.