[He's going to lay a lot on John's shoulders now, things he doesn't really want to entrust to anyone else, but he doesn't have a choice. Pierce is never going to submit to his questions, but an innocent doctor...?

And he can trust John, probably, maybe-- At least John hasn't asked if Bucky is certain this isn't all in his head, like it was with Charlie.]

I need you to talk to him by tomorrow, see if you can get any clue to his location. Don't push too hard, if he won't give it then drop it, don't let him suspect you.