"Are those the military's vehicles?" Several people were standing on the roof.
Behind them was a large painted, "SOS." Before those vehicles appeared, they had heard a helicopter. Unfortunately, as they raced wildly to the building's roof, the helicopter was already flying far away. It was quite difficult to control their excitement when they realized there was still hope. From that day on, they started keeping watch on that roof every day. They didn't care if they met survivor squads or military squads. They were just eager to meet people, living people, instead of endless flesh-eating zombies.
