The second radio transmission, 35 seconds later, indicated that the fight was continuing.
( ( The ( second ( radio transmission ) ) ) ( , ( ( ( 35 seconds ) later ) ( , ( ( indicated ( that ( ( the fight ) ( was continuing ) ) ) ) . ) ) ) ) )
(ROOT (S (NP (DT The) (JJ second) (NN radio) (NN transmission)) (, ,) (ADVP (NP (CD 35) (NNS seconds)) (RB later)) (, ,) (VP (VBD indicated) (SBAR (IN that) (S (NP (DT the) (NN fight)) (VP (VBD was) (VP (VBG continuing)))))) (. .)))
35 seconds later, the next transmission states the flight was continuing. 
( ( ( 35 seconds ) later ) ( , ( ( the ( next transmission ) ) ( ( states ( ( the flight ) ( was continuing ) ) ) . ) ) ) )
(ROOT (S (ADVP (NP (CD 35) (NNS seconds)) (RB later)) (, ,) (NP (DT the) (JJ next) (NN transmission)) (VP (VBZ states) (SBAR (S (NP (DT the) (NN flight)) (VP (VBD was) (VP (VBG continuing)))))) (. .)))