Wanda only looks and acts like that when it's something serious. He knows her well enough for that, and there's their connection to each other, which he can't discount. When she's that serious, he's that serious, and the instinct to protect her kicks in. He drops the rest of the chunk of beef on the counter and comes over to her side as quickly as this place still allows him to do.

"What happened?" Who does he have to go after? "What's going on?"