Relief. He starts to run toward her, but has to stop half-way. He's small, frail, and can feel the shortness of breath coming that means he's pushed too hard.

Steve grabs on to the nearest car to stay upright while he breathes. Even when things were bad, he was never quite this quick to tire. "I'm here. It's me."

He tries for a smile, walking the remaining distance so he can take her hand. It's forward, maybe, but it's reassuring. They're together. They'll figure this out. "What's going on?"