Because Ballinger was still responsible for his other flights as well as Flight 175, his warning message was not transmitted to Flight 93 until 9:23.
( ( Because ( Ballinger ( ( was still ) ( responsible ( for ( ( ( his ( other flights ) ) ( as ( well as ) ) ) ( Flight 175 ) ) ) ) ) ) ) ( , ( ( his ( warning message ) ) ( ( ( was not ) ( ( transmitted ( to ( Flight 93 ) ) ) ( until 9:23 ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN Because) (S (NP (NNP Ballinger)) (VP (VBD was) (ADVP (RB still)) (ADJP (JJ responsible) (PP (IN for) (NP (NP (PRP$ his) (JJ other) (NNS flights)) (CONJP (RB as) (RB well) (IN as)) (NP (NNP Flight) (CD 175)))))))) (, ,) (NP (PRP$ his) (NN warning) (NN message)) (VP (VBD was) (RB not) (VP (VBN transmitted) (PP (TO to) (NP (NNP Flight) (CD 93))) (PP (IN until) (NP (CD 9:23))))) (. .)))
Ballinger's message was delayed in being remitted.
( ( ( Ballinger 's ) message ) ( ( was ( delayed ( in ( being remitted ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Ballinger) (POS 's)) (NN message)) (VP (VBD was) (VP (VBN delayed) (PP (IN in) (S (VP (VBG being) (VP (VBN remitted))))))) (. .)))