Fed Vice-Chairman Stanley Fischer to speak on live TV

What does it say that he's scheduled a special appearance on live TV in the midst of a round of market volatility? That's the kind of thing a central banker might do if he wanted to calm markets with a dovish signal before the close.

He's scheduled for a formal speech on Saturday but he may have something to say that can't wait.

In any case, the financial world will be tuned in.