Lower-level officials improvised-for example, the FAA's Boston Center bypassed the chain of command and directly contacted NEADS after the first hijacking.
( ( ( Lower-level officials ) ( improvised-for example ) ) ( , ( ( ( the ( FAA 's ) ) ( Boston Center ) ) ( ( ( ( bypassed ( ( the chain ) ( of command ) ) ) and ) ( directly ( ( contacted NEADS ) ( after ( the ( first hijacking ) ) ) ) ) ) . ) ) ) )
(ROOT (S (NP (NP (JJ Lower-level) (NNS officials)) (NP (JJ improvised-for) (NN example))) (, ,) (NP (NP (DT the) (NNP FAA) (POS 's)) (NNP Boston) (NNP Center)) (VP (VP (VBD bypassed) (NP (NP (DT the) (NN chain)) (PP (IN of) (NP (NN command))))) (CC and) (VP (ADVP (RB directly)) (VBD contacted) (NP (NNS NEADS)) (PP (IN after) (NP (DT the) (JJ first) (NN hijacking))))) (. .)))
The chain of command was circumvented when the FAA's Boston Center contacted NEADS directly.
( ( ( The chain ) ( of command ) ) ( ( was ( circumvented ( when ( ( ( the ( FAA 's ) ) ( Boston Center ) ) ( ( contacted NEADS ) directly ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN chain)) (PP (IN of) (NP (NN command)))) (VP (VBD was) (VP (VBN circumvented) (SBAR (WHADVP (WRB when)) (S (NP (NP (DT the) (NNP FAA) (POS 's)) (NNP Boston) (NNP Center)) (VP (VBD contacted) (NP (NNS NEADS)) (ADVP (RB directly))))))) (. .)))