(S (S (BASENP (NNP FAA) (NN employee) (NN testimony)) (VP (VBZ is) (VP (VBN expected) (S (VP (TO to) (VP (VB take) (NP (BASENP (DT the) (NN form)) (PP (IN of) (SBAR (WHNP (WDT what) (NNS measures)) (S (S (VP (MD would) (VP (VB have) (VP (VBN been) (VP (VP (VBN taken) (PP (IN by) (BASENP (DT the) (NN agency)))) (S (VP (TO to) (VP (VB prevent) (PP (IN against) (NP (NP (DT the) (NP (NP (BASENP (NNP September) (NN 11)) (COMMA ,) (NN 2001)) (BASENP (NN airliner) (NNS attacks)))) (PP (IN in) (NP (BASENP (NNP New) (NNP York) (NNP City)) (CC and) (BASENP (NNP Washington) (NNP D.C.)))))))))))))) (SBAR (IN if) (S (BASENP (NNP Moussaoui)) (VP (VBD had) (VP (VP (VP (VBN warned) (BASENP (NNS officials))) (PP (IN of) (BASENP (DT the) (NN plan)))) (ADVP (JJ prior) (PP (TO to) (BASENP (DT the) (NNS strikes)))))))))))))))))) (PERIOD .))