chapter 544 in human body

Black Tower and the others were shocked. This was the first time they had heard Jonathan speak in such an anxious and urging tone. They didn't know what had happened and were about to ask when a deafening roar of propellers came. In the distant sky, six huge "steel monsters" with propellers above their heads were seen approaching at an extremely fast speed. There were six armed helicopters. They were huge, with propellers spread out, covering almost half of the sky. The six helicopters were connected...