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Whistle Blowers

W. Mark Felt, left, answers questions for reporters outside District Court in Washington, Monday, Dec. 15, 1980. Felt and Edward S. Miller, right, were fined a total of $8,500 in fines for approving illegal break-ins during a search for radicals. (AP Photo/Schwarz)

The Whistleblowers

By Claudine Zap

Edward Snowden publicly acknowledged he is the intelligence contractor who leaked documents from the National Security Agency's surveillance programs. He is one of a long line of whistleblowers. Here are some of the best known.