For those of us who didn't know already:
Concerned US defence workers were told to keep quiet about the alleged abuse of Iraqi prisoners, memos obtained by a US civil rights group have revealed [...]
One memo, from Vice Admiral Lowell E Jacoby, head of the Defence Intelligence Agency (DIA), describes how staff who complained about abuse were threatened, had their car keys confiscated and e-mails monitored, as well as being ordered not to leave the base or speak to friends or relatives in the US.
Full article here.