How to pronounce “night watchman” in English

So we're shooting "The Winter Soldier," and we're getting ready to-- it's the day where we're going to shoot his scene, his cameo scene.Which is-- I don't know if you remember, if you saw that movie-- he's working as a night watchman at the Smithsonian Museumin Washington DC when someone breaks in in the middle of the night and steals Cap's World War II uniform.