captioning sponsored by macneil/lehrer productions brown: good evening. i m jeffrey brown. the cia announced today that 7 of its employees were killed by a suicide bomber in afghanistan. six others were injured. suarez: and i m ray suarez. the dead included the chief of the targeted cia post. on the newshour tonight, the latest details about one of the deadliest attacks on cia personnel in the agency s history. brown: also tonight, a federal judge has dismissed all charges against 5 blackwater security guards accused of killing unarmed civilians in baghdad. suarez: the president gets a preliminary report into the attempt to blow up a u.s. airliner. we ll talk to intelligence community veterans about what went wrong. brown: then, a second look as paul solman asks economists one central question about the recession: why didant why didn t the fed tell us? why didn t we warn you. yes. suarez: gwen ifill looks back at a dramatic decade in u.s. politics. with