wˈʌns ðə tɹˈeɪn ɪz ˌʌndɚwˈeɪ ðə ɡˈæŋ mˌeɪks ðɛɹ wˈeɪ tʊ ɐn ɪmˈɜːdʒənsi ˈɛɡzɪt ænd ðɪ ˌʌndɚkˈʌvɚ pəlˈiːs ˈɑːfɪsɚ dʒˈʌmps ˈɔf ˌɪntʊ ðə tˈʌnəl.
Once the train is underway the gang makes their way to an emergency exit and the undercover police officer jumps off into the tunnel.