Celebrated FBI whistle-blower Coleen Rowley knows it was the fame which accompanied her national-security complaints about bureaucratic bumbling in the run-up to Sept. 11 — not the good will of FBI management — that kept her career alive. In the now-famous memo that blistered the FBI's hidebound senior management, Rowley took note of the "culture of fear" pervading the FBI, a climate that she said caused her many sleepless nights before she decided to act. In an open letter to Congress she wrote earlier this month, Rowley admitted that prior to her own experience, "I did not fully appreciate...