Lacking a target, they were vectored toward military-controlled airspace off the Long Island coast.
( ( Lacking ( a target ) ) ( , ( they ( ( were ( ( vectored ( toward ( military-controlled airspace ) ) ) ( off ( the ( Long ( Island coast ) ) ) ) ) ) . ) ) ) )
(ROOT (S (S (VP (VBG Lacking) (NP (DT a) (NN target)))) (, ,) (NP (PRP they)) (VP (VBD were) (VP (VBN vectored) (PP (IN toward) (NP (JJ military-controlled) (NN airspace))) (PP (IN off) (NP (DT the) (NNP Long) (NNP Island) (NN coast))))) (. .)))
The Long Island coast was the place of an airspace military experiment.
( ( The ( Long ( Island coast ) ) ) ( ( was ( ( the place ) ( of ( an ( airspace ( military experiment ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP Long) (NNP Island) (NN coast)) (VP (VBD was) (NP (NP (DT the) (NN place)) (PP (IN of) (NP (DT an) (JJ airspace) (JJ military) (NN experiment))))) (. .)))