In sum, the protocols in place on 9/11 for the FAA and NORAD to respond to a hijacking presumed that
( ( In sum ) ( , ( ( the protocols ) ( in ( ( place ( on ( 9/11 ( for ( the ( ( FAA and ) NORAD ) ) ) ) ) ) ( to ( respond ( to ( ( a hijacking ) ( presumed that ) ) ) ) ) ) ) ) ) )
(ROOT (FRAG (PP (IN In) (NP (NN sum))) (, ,) (NP (NP (DT the) (NNS protocols)) (PP (IN in) (NP (NP (NN place)) (PP (IN on) (NP (NP (CD 9/11)) (PP (IN for) (NP (DT the) (NNP FAA) (CC and) (NNP NORAD))))) (S (VP (TO to) (VP (VB respond) (PP (TO to) (NP (NP (DT a) (NN hijacking)) (VP (VBN presumed) (NP (DT that)))))))))))))
Protocols on 9/12 for the FAA and NORAD to respond were used. 
( ( Protocols ( on ( ( 9/12 ( for ( the ( ( FAA and ) NORAD ) ) ) ) ( to respond ) ) ) ) ( ( were used ) . ) )
(ROOT (S (NP (NP (NNS Protocols)) (PP (IN on) (NP (NP (CD 9/12)) (PP (IN for) (NP (DT the) (NNP FAA) (CC and) (NNP NORAD))) (S (VP (TO to) (VP (VB respond))))))) (VP (VBD were) (VP (VBN used))) (. .)))