CNBC's Kelly Evans

The Fed just cut rates inter-meeting for the first time since the terrible, dark days of December 2008, and stocks are selling off. The Dow is down more than 550 points as I write this. The president is already tweeting that "More easing and cutting!" is needed. And frankly, the market agrees. 

If you're going to do something extraordinary to quell a financial panic--and it's not clear this approached that level yet--you have to do something extraordinary. You have to do "shock and awe."