speaking of sloane and whatnot, did anyone else notice that in last weeks two hour eppy that Irina was talking to Nadia and she told Nadia about how she got something from her dad and then Irina looked at Jack and the camera cut to Jack?
So now I'm thinking, since it would be totally JJ to screw us around like this

, that Jack is actually Nadia's father. But then I got to thinking about the whole hourglass that only her father could see, my thing is what if that really didn't matter and they (Sloane, Syd and Jack) thought it did. Plus, since Jack was there in the first place, it worked.
I'm at a loss on who Vaughn really is. Obviously though spymommy knows something about it.