Matt offers him a thin smile, albeit not one without gratitude. He appreciates Foggy's worry -- or at least that he cares enough to worry, still, after everything that's happened these last few days.

"I'll be careful," he promises when it fades. "And it's -- nothing's going to happen tonight."

Even if he gets restless enough, waiting around for Karen or whoever else to show up, to break doctor's orders, he wants a lay of the land, first. Find where ever Fisk's people are making their drugs, stake it out so he knows whether or not to expect another ambush, and then come back and do something about it. It's a little slower than he'd like, especially right now, knowing another blow to Fisk is so close, but -- he needs to be patient. He knows that, too.