(S (S (S (NP (BASENP (NN Two) (NNS counts)) (PP (IN of) (BASENP (DT this)))) (VP (VBP stem) (PP (IN from) (NP (BASENP (DT the) (NN crash)) (PP (IN of) (NP (BASENP (DT a) (NN helicopter)) (SBAR (WHNP (WDT that)) (S (VP (VBD was) (VP (VBG fighting) (BASENP (DT the) (NNS fires)))))))))))) (CONJP (COMMA ,) (CC and)) (S (S (BASENP (DT the) (NN other)) (VP (PP (IN from) (BASENP (DT a) (JJ separate) (NN incident))))) (SBAR (WHADVP (WRB when)) (S (S (BASENP (DT a) (JJ third) (NN firefighter)) (VP (VBD was) (VP (ADVP (RB seriously)) (VBN wounded)))) (SBAR (IN while) (S (VP (VBG battling) (BASENP (DT the) (NNS flames))))))))) (PERIOD .))