We are going back to the airport.
( We ( ( are ( ( going back ) ( to ( the airport ) ) ) ) . ) )
(ROOT (S (NP (PRP We)) (VP (VBP are) (VP (VBG going) (ADVP (RB back)) (PP (TO to) (NP (DT the) (NN airport))))) (. .)))
At this point, the others and myself will be going back to the airport. 
( ( At ( this point ) ) ( , ( ( ( ( the others ) and ) myself ) ( ( will ( be ( ( going back ) ( to ( the airport ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN At) (NP (DT this) (NN point))) (, ,) (NP (NP (DT the) (NNS others)) (CC and) (NP (PRP myself))) (VP (MD will) (VP (VB be) (VP (VBG going) (ADVP (RB back)) (PP (TO to) (NP (DT the) (NN airport)))))) (. .)))