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Nbc news justice correspondent pete williams, who has been covering this story for us, joins us now from washington. pete, good to see you. >> good to see you. i think the reason the white house doesnt want to get into this is because it was an intelligence coo. there was a source inside yemen where the bomb was built. that source eventually left yem within the bomb. there are indications the source was the suicide bomber himself. although, we dont know that for certain. in any event, a remarkab...