You cannot trust 25 guys in a locker room to have the same respect and training as I do with a weapon. That I do understand. I've carried a gun for 10 years. I've carried them in the locker room, and nobody really knows about it. I know how to handle myself.
"Ahu" are stone platforms on which many moai sit. There are 313 known ahu and 125 of these carry moai. The biggest, Ahu Tongariki is 220 m (720 ft), and had the most (15) and tallest moai.