By all accounts, the interrogation of Iraqi Maj. Gen. Abed Hamed Mowhoush went terribly wrong. Military guards accused his interrogators of beating the detainee and stuffing his body into a sleeping bag bound with electrical cord until he suffocated.

When it came time for a CIA employee to testify during the court-martial of Army Chief Warrant Officer Lewis Welshofer, however, officials went to great lengths to protect the employee's identity, erecting a high, Army-green tarpaulin to shield him from spectators.

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