but once the falcon arrives in the skies above manhattan , the adventure is on red alert . 
(ROOT (S (CC but) (SBAR (IN once) (S (NP (DT the) (NN falcon)) (VP (VBZ arrives) (PP (IN in) (NP (NP (DT the) (NNS skies)) (PP (IN above) (NP (NNP manhattan)))))))) (, ,) (NP (DT the) (NN adventure)) (VP (VBZ is) (PP (IN on) (NP (JJ red) (NN alert)))) (. .)))
(ROOT (S (CC ) (SBAR (IN ) (S (NP (DT ) (NN )) (VP (VBZ ) (PP (IN ) (NP (NP (DT ) (NNS )) (PP (IN ) (NP (NNP )))))))) (, ) (NP (DT ) (NN )) (VP (VBZ ) (PP (IN ) (NP (JJ ) (NN )))) (. )))