"The Predator swiftly collected heads it hadn't already cut off. It brought them back to the piles it had already cut off. It brought them back to the piles it had arranged in protected areas near the gate. Five piles, ten heads per pile. It had used this tactic several hunts ago, against members of an amphibious race living on top of a huge parasite. Grabbing a handful of skulls, the Predator flung them over the defenders wall in a high and graceful arc." Pg.306 chpt.91

"As the cabbage sized objects came Ober the northwest side of the inner wall, Raths men began to fire in the darkness again even as Rath shouted at the NOT to fire back. He'd recognize the objects as soon as the Predator had lobbed the first few over the wall and they'd rolled to a halt face up in the dirt below. Just another psychological scare tactic. Throwing the heads of the war dead back at defenders had been going on for thousands of years of human history. In a strange way, Rath was disappointed. He'd expect a less obvious tactic. But as calm as he might've been, the heads had begun causing chaos among his already demoralized men." Pg 309 chpt.94