Mihdhar did not trigger the alarm and was permitted through the checkpoint.
( Mihdhar ( ( ( ( ( did not ) ( trigger ( the alarm ) ) ) and ) ( was ( permitted ( through ( the checkpoint ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Mihdhar)) (VP (VP (VBD did) (RB not) (VP (VB trigger) (NP (DT the) (NN alarm)))) (CC and) (VP (VBD was) (VP (VBN permitted) (PP (IN through) (NP (DT the) (NN checkpoint)))))) (. .)))
Mihdhar was able to pass quickly through security.
( Mihdhar ( ( was ( able ( to ( ( pass quickly ) ( through security ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Mihdhar)) (VP (VBD was) (ADJP (JJ able) (S (VP (TO to) (VP (VB pass) (ADVP (RB quickly)) (PP (IN through) (NP (NN security)))))))) (. .)))