At 7:18, Mihdhar and Moqed entered the security checkpoint.
( ( At 7:18 ) ( , ( ( ( Mihdhar and ) Moqed ) ( ( entered ( the ( security checkpoint ) ) ) . ) ) ) )
(ROOT (S (PP (IN At) (NP (CD 7:18))) (, ,) (NP (NNP Mihdhar) (CC and) (NNP Moqed)) (VP (VBD entered) (NP (DT the) (NN security) (NN checkpoint))) (. .)))
Moqed and Midhar went into the checkpoint which was meant for security.
( ( ( Moqed and ) Midhar ) ( ( went ( into ( ( the checkpoint ) ( which ( was ( meant ( for security ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Moqed) (CC and) (NNP Midhar)) (VP (VBD went) (PP (IN into) (NP (NP (DT the) (NN checkpoint)) (SBAR (WHNP (WDT which)) (S (VP (VBD was) (VP (VBN meant) (PP (IN for) (NP (NN security)))))))))) (. .)))