The two agents’ accounts offer an inside view of a bureau buffeted by politics and upheaval, adding to the scrutiny of the F.B.I. director as he prepares to testify to Congress.
“We were always told that we would be taken care of and there would not be any retaliation for our assigned work,” Walter Giardina told his supervisors the day he was fired from his job as an F.B.I. agent, according to notes of the conversation.