The NEADS technician who took this call from the FAA immediately passed the word to the mission crew commander, who reported to the NEADS battle  Mission Crew Commander,  Okay, uh, American Airlines is still airborne.
( ( ( The ( NEADS technician ) ) ( who ( ( took ( this call ) ) ( from ( the FAA ) ) ) ) ) ( immediately ( ( ( passed ( the word ) ) ( to ( ( ( the ( mission ( crew commander ) ) ) , ) ( who ( ( ( reported ( to ( the ( NEADS ( battle ( Mission ( Crew Commander ) ) ) ) ) ) ) , ) ( Okay ( , ( uh ( , ( ( American Airlines ) ( ( is still ) airborne ) ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (NP (DT The) (NNP NEADS) (NN technician)) (SBAR (WHNP (WP who)) (S (VP (VBD took) (NP (DT this) (NN call)) (PP (IN from) (NP (DT the) (NNP FAA))))))) (ADVP (RB immediately)) (VP (VBD passed) (NP (DT the) (NN word)) (PP (TO to) (NP (NP (DT the) (NN mission) (NN crew) (NN commander)) (, ,) (SBAR (WHNP (WP who)) (S (VP (VBD reported) (PP (TO to) (NP (DT the) (NNS NEADS) (NN battle) (NNP Mission) (NNP Crew) (NNP Commander))) (, ,) (S (INTJ (UH Okay)) (, ,) (INTJ (UH uh)) (, ,) (NP (NNP American) (NNPS Airlines)) (VP (VBZ is) (ADVP (RB still)) (ADJP (JJ airborne)))))))))) (. .)))
The technician talked to his commander, who then reported to the battle commander.
( ( The technician ) ( ( talked ( to ( ( ( his commander ) , ) ( who ( then ( reported ( to ( the ( battle commander ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN technician)) (VP (VBD talked) (PP (TO to) (NP (NP (PRP$ his) (NN commander)) (, ,) (SBAR (WHNP (WP who)) (S (ADVP (RB then)) (VP (VBD reported) (PP (TO to) (NP (DT the) (NN battle) (NN commander))))))))) (. .)))