As this exchange shows, Secretary Rumsfeld was not in the NMCC when the shootdown order was first conveyed.
( ( As ( ( this exchange ) shows ) ) ( , ( ( Secretary Rumsfeld ) ( ( ( ( was not ) ( in ( the NMCC ) ) ) ( when ( ( the ( shootdown order ) ) ( was ( first conveyed ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN As) (S (NP (DT this) (NN exchange)) (VP (VBZ shows)))) (, ,) (NP (NNP Secretary) (NNP Rumsfeld)) (VP (VBD was) (RB not) (PP (IN in) (NP (DT the) (NN NMCC))) (SBAR (WHADVP (WRB when)) (S (NP (DT the) (NN shootdown) (NN order)) (VP (VBD was) (NP (JJ first) (NNS conveyed)))))) (. .)))
The shootdown order was conveyed before Secretary Rumsfeld was there.
( ( The ( shootdown order ) ) ( ( was ( conveyed ( before ( ( Secretary Rumsfeld ) ( was there ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN shootdown) (NN order)) (VP (VBD was) (VP (VBN conveyed) (SBAR (IN before) (S (NP (NNP Secretary) (NNP Rumsfeld)) (VP (VBD was) (ADVP (RB there))))))) (. .)))