At the suggestion of the Boston Center's military liaison, NEADS contacted the FAA's Washington Center to ask about American 11.
( ( At ( ( the suggestion ) ( of ( ( the ( Boston ( Center 's ) ) ) ( military liaison ) ) ) ) ) ( , ( NEADS ( ( contacted ( ( ( the ( FAA 's ) ) ( Washington Center ) ) ( to ( ask ( about ( American 11 ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN At) (NP (NP (DT the) (NN suggestion)) (PP (IN of) (NP (NP (DT the) (NNP Boston) (NNP Center) (POS 's)) (JJ military) (NN liaison))))) (, ,) (NP (NNS NEADS)) (VP (VBD contacted) (S (NP (NP (DT the) (NNP FAA) (POS 's)) (NNP Washington) (NNP Center)) (VP (TO to) (VP (VB ask) (PP (IN about) (NP (NNP American) (CD 11))))))) (. .)))
NEADS got in touch with the Washington Center of the FAA, asking about American 11.
( NEADS ( ( ( ( ( got ( in touch ) ) ( with ( ( the ( Washington Center ) ) ( of ( the FAA ) ) ) ) ) , ) ( asking ( about ( American 11 ) ) ) ) . ) )
(ROOT (S (NP (NNS NEADS)) (VP (VBD got) (PP (IN in) (NP (NN touch))) (PP (IN with) (NP (NP (DT the) (NNP Washington) (NNP Center)) (PP (IN of) (NP (DT the) (NNP FAA))))) (, ,) (S (VP (VBG asking) (PP (IN about) (NP (NNP American) (CD 11)))))) (. .)))