Or the flight attendants may just have been in their way.
( Or ( ( the ( flight attendants ) ) ( ( ( may just ) ( have ( been ( in ( their way ) ) ) ) ) . ) ) )
(ROOT (S (CC Or) (NP (DT the) (NN flight) (NNS attendants)) (VP (MD may) (ADVP (RB just)) (VP (VB have) (VP (VBN been) (PP (IN in) (NP (PRP$ their) (NN way)))))) (. .)))
The terrorists tied  the flight attendants because they were in the way. 
( ( The terrorists ) ( ( ( tied ( the ( flight attendants ) ) ) ( because ( they ( were ( in ( the way ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNS terrorists)) (VP (VBD tied) (NP (DT the) (NN flight) (NNS attendants)) (SBAR (IN because) (S (NP (PRP they)) (VP (VBD were) (PP (IN in) (NP (DT the) (NN way))))))) (. .)))