(S (S (S (NP (QP (ADVP (RB Up) (TO to)) (NN 30)) (BASENP (NN police) (NNS officers))) (VP (VBD were) (VP (VP (VBN stationed) (PP (IN at) (NP (BASENP (DT a) (NN roadblock)) (PP (IN at) (NP (BASENP (DT the) (NN turn-off)) (PP (TO to) (BASENP (NNP Pine) (NNP Gap)))))))) (PP (IN at) (NP (BASENP (NN 6:00) (NN a.m.)) (BASENP (JJ local) (NN time))))))) (CC and) (S (BASENP (NNP Gap) (NNS staff)) (VP (VBD were) (VP (VBN ordered) (S (VP (TO to) (VP (VB remain) (PP (IN in) (NP (BASENP (PRPD their) (NNS cars)) (PP (IN at) (BASENP (DT the) (NN roadblock)))))))))))) (PERIOD .))