My apologies if this has been asked before, but a Google Groups search
(to my surprise) yields nothing.
Does the fuse hidden at the top of the secret (Korath III Base) level
in Keen 5 serve any purpose? What happens if it is broken? Is it even
possible to break it?
I've tried pogoing on it, firing down at it, and doing both these at
once; none works. It's a pity that there are none of those mobile bomb
things on this level, the ones that alone can destroy the QED in the
final level (I only a month ago discovered this by way of a web search,
d'oh!)...