NORAD, what's the situation?
( NORAD ( , ( what ( ( 's ( the situation ) ) ? ) ) ) )
(ROOT (SBARQ (NP (NNP NORAD)) (, ,) (WHNP (WP what)) (SQ (VBZ 's) (NP (DT the) (NN situation))) (. ?)))
What is going on,  NORAD? 
( What ( ( is ( ( ( going on ) , ) NORAD ) ) ? ) )
(ROOT (SBARQ (WHNP (WP What)) (SQ (VP (VBZ is) (VP (VP (VBG going) (PRT (RP on))) (, ,) (VP (VBN NORAD))))) (. ?)))