Visible crew/equipment: When Helen's storm chasing crew begins to take shelter in the building, there is a shot of everyone running down the stairs to the basement. This shot shows Preacher run into something. It looks like a hand-held camera.
Visible crew/equipment: When Jo and Bill are driving through destroyed Wakita, Jo looks at a family hugging on the side of the road. As the camera pans along them, the shadow of a boom mike is visible, gliding along them.
Answer: No double meanings. Jo just sees the lethal-looking farm equipment (which is ordinary equipment that many farmers have) and in her panicked state wonders who would have such dangerous things in their barn, as though they were serial killers or something. Bill's "I don't think so!" just means they're not hiding in the barn where they could get impaled or decapitated at any second.
Krista