If approval was given, the orders would be transmitted down NORAD's chain of command.
( ( If ( approval ( was given ) ) ) ( , ( ( the orders ) ( ( would ( be ( ( transmitted down ) ( ( ( NORAD 's ) chain ) ( of command ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN If) (S (NP (NN approval)) (VP (VBD was) (VP (VBN given))))) (, ,) (NP (DT the) (NNS orders)) (VP (MD would) (VP (VB be) (VP (VBN transmitted) (PRT (RP down)) (NP (NP (NP (NNP NORAD) (POS 's)) (NN chain)) (PP (IN of) (NP (NN command))))))) (. .)))
The orders required approval to be given to proceed.
( ( The orders ) ( ( ( required approval ) ( to ( be ( given ( to proceed ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNS orders)) (VP (VBD required) (NP (NN approval)) (S (VP (TO to) (VP (VB be) (VP (VBN given) (S (VP (TO to) (VP (VB proceed))))))))) (. .)))