[Yeah, he's going to need coffee for this. He starts tending to that, trying to hide his bit of exasperation at the idea that aliens can be the only potential hostiles. The MiB has to watch out for threatening humans as well, even if they're left mostly to human law enforcement communities.]

Including you. [He says that first, filling up his cup and putting some sugar in it.] Actually, you're the alien in this case, more than most of the people that live here.

So are all of us more suspect to you than the "natives"?