Boston Center asked the Herndon Command Center to issue a similar cockpit security alert nationwide.
( ( Boston Center ) ( ( asked ( ( the ( Herndon ( Command Center ) ) ) ( to ( ( issue ( a ( similar ( cockpit ( security alert ) ) ) ) ) nationwide ) ) ) ) . ) )
(ROOT (S (NP (NNP Boston) (NNP Center)) (VP (VBD asked) (S (NP (DT the) (NNP Herndon) (NNP Command) (NNP Center)) (VP (TO to) (VP (VB issue) (NP (DT a) (JJ similar) (NN cockpit) (NN security) (NN alert)) (ADVP (RB nationwide)))))) (. .)))
Herndon was asked by Boston to send a cockpit security alert to the whole country.
( Herndon ( ( was ( ( asked ( by Boston ) ) ( to ( ( send ( a ( cockpit ( security alert ) ) ) ) ( to ( the ( whole country ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Herndon)) (VP (VBD was) (VP (VBN asked) (PP (IN by) (NP (NNP Boston))) (S (VP (TO to) (VP (VB send) (NP (DT a) (NN cockpit) (NN security) (NN alert)) (PP (TO to) (NP (DT the) (JJ whole) (NN country)))))))) (. .)))