Re Aden and the likes, one of the guys I was with served there and he told us one day that they built two of those big high water towers you used to see on a metal legs, after getting about 3/4 of the way up one stopped and started to get smaller while the other one continued up, enquiring he was told that someone had cocked up and that one was being built at the wrong camp. True or not I don't know, but it sounded about right.