This was the first of several occasions on 9/11 when flight attendants took action outside the scope of their training, which emphasized that in a hijacking, they were to communicate with the cockpit crew.
( This ( ( was ( ( ( the first ) ( of ( ( several occasions ) ( on 9/11 ) ) ) ) ( when ( ( flight attendants ) ( ( took action ) ( outside ( ( the scope ) ( of ( ( ( their training ) , ) ( which ( emphasized ( that ( ( in ( a hijacking ) ) ( , ( they ( were ( to ( communicate ( with ( the ( cockpit crew ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT This)) (VP (VBD was) (NP (NP (DT the) (JJ first)) (PP (IN of) (NP (NP (JJ several) (NNS occasions)) (PP (IN on) (NP (CD 9/11))))) (SBAR (WHADVP (WRB when)) (S (NP (NN flight) (NNS attendants)) (VP (VBD took) (NP (NN action)) (PP (IN outside) (NP (NP (DT the) (NN scope)) (PP (IN of) (NP (NP (PRP$ their) (NN training)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBD emphasized) (SBAR (IN that) (S (PP (IN in) (NP (DT a) (NN hijacking))) (, ,) (NP (PRP they)) (VP (VBD were) (S (VP (TO to) (VP (VB communicate) (PP (IN with) (NP (DT the) (NN cockpit) (NN crew))))))))))))))))))))) (. .)))
The flight attendants took action outside the scope of their training.
( ( The ( flight attendants ) ) ( ( ( took action ) ( outside ( ( the scope ) ( of ( their training ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN flight) (NNS attendants)) (VP (VBD took) (NP (NN action)) (PP (IN outside) (NP (NP (DT the) (NN scope)) (PP (IN of) (NP (PRP$ their) (NN training)))))) (. .)))