From The Grey House:
“The vampires farm the humans; the humans farm the sheep and you chase fresh meat every once in a while.”
“Yep.” Charlie was parking the van in an underground garage. Natalia heard the large garage door close and watched the lights come on. Three men emerged from a door further down the garage. Charlie opened the driver door and yelled a hello to the approaching men. Natalia, stiff from sitting too long, opened her door and climbed out. The three newcomers were dressed similarly in jeans, t-shirts and work boots. They ignored her and went to the back doors to unload the cargo.