If a hijack was confirmed, procedures called for the hijack coordinator on duty to contact the Pentagon's National Military Command Center (NMCC) and to ask for a military escort aircraft to follow the flight, report anything unusual, and aid search and rescue in the event of an emergency.
( ( If ( ( a hijack ) ( was confirmed ) ) ) ( , ( procedures ( ( ( called ( for ( ( the ( hijack coordinator ) ) ( on duty ) ) ) ) ( ( ( to ( contact ( ( ( the ( Pentagon 's ) ) ( National ( Military ( Command Center ) ) ) ) ( -LRB- ( NMCC -RRB- ) ) ) ) ) and ) ( to ( ( ask ( for ( a ( military ( escort aircraft ) ) ) ) ) ( to ( ( ( ( ( ( follow ( the flight ) ) , ) ( report ( anything unusual ) ) ) , ) and ) ( ( aid ( ( search and ) rescue ) ) ( in ( ( the event ) ( of ( an emergency ) ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN If) (S (NP (DT a) (NN hijack)) (VP (VBD was) (VP (VBN confirmed))))) (, ,) (NP (NNS procedures)) (VP (VBD called) (PP (IN for) (NP (NP (DT the) (NN hijack) (NN coordinator)) (PP (IN on) (NP (NN duty))))) (S (VP (VP (TO to) (VP (VB contact) (NP (NP (NP (DT the) (NNP Pentagon) (POS 's)) (NNP National) (NNP Military) (NNP Command) (NNP Center)) (PRN (-LRB- -LRB-) (NP (NNP NMCC)) (-RRB- -RRB-))))) (CC and) (VP (TO to) (VP (VB ask) (PP (IN for) (NP (DT a) (JJ military) (NN escort) (NN aircraft))) (S (VP (TO to) (VP (VP (VB follow) (NP (DT the) (NN flight))) (, ,) (VP (VB report) (S (NP (NN anything)) (ADJP (JJ unusual)))) (, ,) (CC and) (VP (VB aid) (NP (NN search) (CC and) (NN rescue)) (PP (IN in) (NP (NP (DT the) (NN event)) (PP (IN of) (NP (DT an) (NN emergency)))))))))))))) (. .)))
Once a hijacking is confirmed the Pentagon's National Military Command Center (NMCC) is supposed to be notified so they can order a military escort aircraft to follow the flight and report on anything suspicious.
( ( Once ( ( a hijacking ) ( is ( confirmed ( ( ( the ( Pentagon 's ) ) ( National ( Military ( Command Center ) ) ) ) ( -LRB- ( NMCC -RRB- ) ) ) ) ) ) ) ( ( is ( supposed ( to ( be ( notified ( so ( they ( can ( ( order ( a ( military ( escort aircraft ) ) ) ) ( to ( follow ( ( ( the ( ( flight and ) report ) ) ( on anything ) ) suspicious ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (SBAR (IN Once) (S (NP (DT a) (NN hijacking)) (VP (VBZ is) (VP (VBN confirmed) (NP (NP (NP (DT the) (NNP Pentagon) (POS 's)) (NNP National) (NNP Military) (NNP Command) (NNP Center)) (PRN (-LRB- -LRB-) (NP (NNP NMCC)) (-RRB- -RRB-))))))) (VP (VBZ is) (VP (VBN supposed) (S (VP (TO to) (VP (VB be) (VP (VBN notified) (SBAR (IN so) (S (NP (PRP they)) (VP (MD can) (VP (VB order) (NP (DT a) (JJ military) (NN escort) (NN aircraft)) (S (VP (TO to) (VP (VB follow) (S (NP (NP (DT the) (NN flight) (CC and) (NN report)) (PP (IN on) (NP (NN anything)))) (ADJP (JJ suspicious)))))))))))))))) (. .)))