I climb up, settle in, and wait. I see nothing for an hour. That’s okay, I know they’ll move eventually. It’s the rut. At 4:45, I hear a rumble like a distant hurricane. A brand new John Deere tractor lumbers toward me dragging about eight disks behind it. It’s so new it looks like they drove it straight here from the show room. The damn thing disks a swath 40 feet wide, maybe more. The ground shakes. It passes within 20 yards, close enough that I can see the driver talking into a handheld mike. He’s wearing a headset. There are two screens on in the cab, one bigger than the other. It looks like real time satellite imagery of what he has just disked, and what remains.