The threat of Soviet bombers diminished significantly as the Cold War ended, and the number of NORAD alert sites was reduced from its Cold War high of 26.
( ( ( ( ( ( ( The threat ) ( of ( Soviet bombers ) ) ) ( ( diminished significantly ) ( as ( ( the ( Cold War ) ) ended ) ) ) ) , ) and ) ( ( ( the number ) ( of ( NORAD ( alert sites ) ) ) ) ( was ( reduced ( from ( ( its ( Cold ( War high ) ) ) ( of 26 ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NP (DT The) (NN threat)) (PP (IN of) (NP (JJ Soviet) (NNS bombers)))) (VP (VBD diminished) (ADVP (RB significantly)) (SBAR (IN as) (S (NP (DT the) (NNP Cold) (NNP War)) (VP (VBD ended)))))) (, ,) (CC and) (S (NP (NP (DT the) (NN number)) (PP (IN of) (NP (JJ NORAD) (JJ alert) (NNS sites)))) (VP (VBD was) (VP (VBN reduced) (PP (IN from) (NP (NP (PRP$ its) (NNP Cold) (NNP War) (NN high)) (PP (IN of) (NP (CD 26)))))))) (. .)))
The reduced number of alert sites was a direct result of reduced Soviet bomber numbers.
( ( ( The ( reduced number ) ) ( of ( alert sites ) ) ) ( ( was ( ( a ( direct result ) ) ( of ( reduced ( Soviet ( bomber numbers ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (VBN reduced) (NN number)) (PP (IN of) (NP (JJ alert) (NNS sites)))) (VP (VBD was) (NP (NP (DT a) (JJ direct) (NN result)) (PP (IN of) (NP (JJ reduced) (JJ Soviet) (NN bomber) (NNS numbers))))) (. .)))