The trailer and cast would have you think that this is another variation on Xenophon, with our plucky two-some fighting their way through hostile territory.
However the film hops from genre to genre, a washed up cop, Willis, escorts a felon, Mos Def, to court, and finds that corrupt cops want him dead. There is some action, a Dog Day Afternoon seige, a lot of chat, and an unexpected ending. Frankly it was the end that made the film for me, so I won't say too much about it.
This is certainly not perfect, casting Willis was a mistake, although he is fine, you expect him to run about in his vest killing bad guys, which is not really what the film is about, similarly Mos Def is likeable but I constantly struggled to understand what he was saying. On the other hand the cinematography could have been grungier, New York looked fairly pristine.
There is a decent script in here, but unfortunately it does not fully work as a film.