Rather than focus on the big, news-making earthquakes, geophysicist Ken Creager is interested instead in the ones that tend to fly under the radar. Through a series of field experiments, involving the deployment of hundreds of seismometers, he has harnessed the seismic waves of tens of thousands of tiny quakes to unravel the details of slow slip events that occur on the plate interface of the Cascadia Subduction Zone at depths of 25-45 kilometers. The significance of these recently discovered slow-slip quakes is that they might trigger a Big One, and that they help place bounds on the eastern edge of the Big One, i.e. how close the megathrust earthquakes get to the major populations centers of the Pacific Northwest. Creager has received substantial support from the National Science Foundation for his research, and in recognition of his work, he was named a Fellow of the American Geophysical Union in 2011.