The Vice President was wondering how the hell could a plane hit the World Trade Center when he saw the second aircraft strike the South Tower.
( ( ( The ( Vice President ) ) ( was ( wondering ( how ( ( the hell ) could ) ) ) ) ) ( ( a plane ) ( ( hit ( ( the ( World ( Trade Center ) ) ) ( when ( he ( saw ( ( the ( second aircraft ) ) ( strike ( the ( South Tower ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (S (NP (DT The) (NNP Vice) (NNP President)) (VP (VBD was) (VP (VBG wondering) (SBAR (WHADVP (WRB how)) (S (NP (DT the) (NN hell)) (VP (MD could))))))) (NP (DT a) (NN plane)) (VP (VBD hit) (NP (NP (DT the) (NNP World) (NNP Trade) (NNP Center)) (SBAR (WHADVP (WRB when)) (S (NP (PRP he)) (VP (VBD saw) (SBAR (S (NP (DT the) (JJ second) (NN aircraft)) (VP (VBP strike) (NP (DT the) (NNP South) (NNP Tower)))))))))) (. .)))
The Vice President was watching a feed of the World Trade Center from a secure room.
( ( The ( Vice President ) ) ( ( was ( ( watching ( ( a feed ) ( of ( the ( World ( Trade Center ) ) ) ) ) ) ( from ( a ( secure room ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP Vice) (NNP President)) (VP (VBD was) (VP (VBG watching) (NP (NP (DT a) (NN feed)) (PP (IN of) (NP (DT the) (NNP World) (NNP Trade) (NNP Center)))) (PP (IN from) (NP (DT a) (JJ secure) (NN room))))) (. .)))