Looking over to Ezra once the boy arrives is a relief, even though Jon can clearly pick up his anxiety right next to his own. He gestures over the ship's controls with a lost expression and a shake of his head. "W-we used to? B-Bucky. One of them... The one that was with Steve. Haven't seen him in a bit, though... Neither of them. This is not-- Christ!" Jon curses briefly in his growing frustration and his attention snaps on Ezra, expression pleading. "Please tell me you have ANY idea about how to control one of these things! Because I don't. I can barely navigate Facebook!"

And the only reason he has been able to even figure out which button to press to use the intercom may very well be that he currently has the communications data point. Somehow it just had made sense to press this particular button.