Don't forget he has no idea what all is going on, Shinji!

"There's three of us," or maybe two now, considering the transmission that came through to startle Kai like that. "It's our job to stop... things like that. If Asuka and Ayanami can't stop it..."

He trails off for a moment, as if he's suddenly remembering something really important. "I should... be out there right now." And yet, he is instead here. He's not even making a move to try and get out of Kai's grip, or out of the shelter at all.