It is not clear how the shootdown order was communicated within NORAD.
( It ( ( ( ( is not ) clear ) ( how ( ( the ( shootdown order ) ) ( was ( communicated ( within NORAD ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ is) (RB not) (ADJP (JJ clear)) (SBAR (WHADVP (WRB how)) (S (NP (DT the) (NN shootdown) (NN order)) (VP (VBD was) (VP (VBN communicated) (PP (IN within) (NP (NNP NORAD)))))))) (. .)))
The shootdown order was communicated inside of NORAD.
( ( The ( shootdown order ) ) ( ( was ( ( communicated inside ) ( of NORAD ) ) ) . ) )
(ROOT (S (NP (DT The) (NN shootdown) (NN order)) (VP (VBD was) (VP (VBN communicated) (ADVP (RB inside)) (PP (IN of) (NP (NNP NORAD))))) (. .)))