NEADS decided to keep the Otis fighters over New York.
( NEADS ( ( decided ( to ( ( keep ( the ( Otis fighters ) ) ) ( over ( New York ) ) ) ) ) . ) )
(ROOT (S (NP (NNS NEADS)) (VP (VBD decided) (S (VP (TO to) (VP (VB keep) (NP (DT the) (NNP Otis) (NNS fighters)) (PP (IN over) (NP (NNP New) (NNP York))))))) (. .)))
The fighters were on guard to destroy any airplane.
( ( The fighters ) ( ( ( were ( on guard ) ) ( to ( destroy ( any airplane ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNS fighters)) (VP (VBD were) (PP (IN on) (NP (NN guard))) (S (VP (TO to) (VP (VB destroy) (NP (DT any) (NN airplane)))))) (. .)))