(S (S (PP (VBG According) (PP (TO to) (BASENP (NNP Air) (NNP Force) (NN spokesperson) (NNP Karl) (NNP Lewis)))) (COMMA ,) (S (S (BASENP (DT the) (NN aircraft)) (VP (VBD were) (PP (IN from) (BASENP (DT the) (JJ 457th) (NNP Fighter) (NNP Squadron))))) (CC and) (S (NP (BASENP (DT the) (NN error)) (PP (IN in) (BASENP (DT the) (JJ initial) (NN report)))) (VP (VBD was) (PP (JJ due) (PP (TO to) (NP (BASENP (DT an) (JJ internal) (NNS communications) (NN problem)) (PP (IN between) (NP (BASENP (NNS offices)) (PP (IN at) (BASENP (DT the) (NN base)))))))))))) (PERIOD .))