(S (S (NP (BASENP (DT The) (NNP United) (NNPS States) (NN military) (NNP Strategic) (NNP Command)) (PRN (LRB -LRB-) (BASENP (NNP STRATCOM)) (RRB -RRB-))) (VP (VBZ has) (VP (VBN said) (SBAR (IN that) (S (NP (BASENP (DT the) (QT (DQL `) (NNS fireballs) (DQR '))) (VP (VP (VBN spotted) (PP (IN over) (NP (BASENP (NNS areas)) (PP (IN of) (NP (BASENP (NNP Texas)) (PP (IN in) (BASENP (DT the) (NNP United) (NNPS States)))))))) (PP (IN on) (BASENP (NNP Sunday) (NNP February) (NN 15))))) (COMMA ,) (VP (VP (VBP are) (RB not)) (PP (VBN related) (PP (TO to) (NP (NP (BASENP (DT the) (NN collision)) (PP (IN of) (BASENP (DT a) (ADJP (JJ U.S.) (CC and) (JJ Russian)) (NN satellite)))) (PP (IN in) (BASENP (NN space)))))))))))) (PERIOD .))