I was outside and had just finished cutting some firewood when the CHP helicopter flew right over real low, just above the treetops I was under. I watched as it circled around and came back, right over me, almost hovering. I began to walk into the garage when a city LEO showed up in the Supervisor's SUV. He rolled down the window as I approached and explained he was looking for an armed robber (who had just held up the donut shop, of all places). He got out of his vehicle with an AR, and said "I'm not going to shoot anybody, this has good optics" and began to look down the hill. (We live on a hilltop surrounded by 50 or so acres of thick sagebrush, oak, and pine). I told him I'd get the binoculars and help him look. He said "If he's there, the helicopter will see him". I asked if the helo had IR and he said yes. (which explains why it hovered over me under the trees).
Anyway, he searched for about 30 minutes then left. I don't know if they caught the armed robber or not.