The mission crew commander explained to us that the purpose was to position the Langley fighters between the reported southbound American 11 and the nation's capital.
( ( The ( mission ( crew commander ) ) ) ( ( ( explained ( to us ) ) ( that ( ( the purpose ) ( was ( to ( ( position ( the ( Langley fighters ) ) ) ( between ( ( ( ( the ( reported southbound ) ) ( American 11 ) ) and ) ( ( the ( nation 's ) ) capital ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN mission) (NN crew) (NN commander)) (VP (VBD explained) (PP (TO to) (NP (PRP us))) (SBAR (IN that) (S (NP (DT the) (NN purpose)) (VP (VBD was) (S (VP (TO to) (VP (VB position) (NP (DT the) (NNP Langley) (NNS fighters)) (PP (IN between) (NP (NP (NP (DT the) (JJ reported) (NN southbound)) (ADJP (JJ American) (NP (CD 11)))) (CC and) (NP (NP (DT the) (NN nation) (POS 's)) (NN capital))))))))))) (. .)))
The crew commander said that fighters would be placed between Washington DC and American 11.
( ( The ( crew commander ) ) ( ( said ( that ( fighters ( would ( be ( placed ( between ( ( ( Washington DC ) and ) ( American 11 ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN crew) (NN commander)) (VP (VBD said) (SBAR (IN that) (S (NP (NNS fighters)) (VP (MD would) (VP (VB be) (VP (VBN placed) (PP (IN between) (NP (NP (NNP Washington) (NNP DC)) (CC and) (NP (NNP American) (CD 11)))))))))) (. .)))