"avoidance tactics in an attempt to minimise panic."
Wot, rioting in the streets? How thoughtful to have spared us that!
No, I'm not sure "praiseworthy secrecy" for the sake of either the public or the hill will fit with the facts, although I have little doubt that may come up, rather soon.
(The facts it doesn't fit with are that loads of people go up there all the time and all have eyes).