(S (S (BASENP (DT The) (JJ fatal) (NN accident)) (VP (VP (VBZ is) (RB not)) (NP (BASENP (DT the) (RB only) (DT such) (NN problem)) (SBAR (S (VP (TO to) (VP (VP (VB beset) (NP (BASENP (DT the) (NNP F-22)) (COMMA ,) (SBAR (WHNP (WDT which)) (S (PP (IN despite) (S (VP (VBG being) (VP (VP (VBN billed) (PP (IN by) (BASENP (DT the) (NNP Air) (NNP Force)))) (PP (IN as) (BASENP (PRPD their) (ADJP (RBS most) (JJ advanced)) (NN fighter))))))) (VP (VBZ has) (VP (ADVP (RB never)) (VP (VBN been) (VP (VP (VBN deployed) (PP (TO to) (BASENP (NN combat)))) (PP (IN since) (S (VP (VP (VBG coming) (PP (IN into) (BASENP (NN service)))) (ADVP (BASENP (NN seven) (NNS years)) (RB ago)))))))))))))))))))) (PERIOD .))