The FAA and CIA joined at 9:40.
( ( The ( ( FAA and ) CIA ) ) ( ( joined ( at 9:40 ) ) . ) )
(ROOT (S (NP (DT The) (NNP FAA) (CC and) (NNP CIA)) (VP (VBD joined) (PP (IN at) (NP (CD 9:40)))) (. .)))
The CIA was late and had to join after the start due to an ongoing investigation. 
( ( The CIA ) ( ( ( ( was late ) and ) ( had ( to ( join ( after ( ( the start ) ( due ( to ( an ( ongoing investigation ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP CIA)) (VP (VP (VBD was) (ADVP (RB late))) (CC and) (VP (VBD had) (S (VP (TO to) (VP (VB join) (PP (IN after) (NP (NP (DT the) (NN start)) (ADJP (JJ due) (PP (TO to) (NP (DT an) (JJ ongoing) (NN investigation))))))))))) (. .)))