Hmm. This is interesting. Looks like this hatch is an emergency exit for the underground missile silo.
Apparently the crew used to come up here and drink of a night when the base was being built. He’s got some random aside about a bottletop that he stamped into the concrete somewhere nearby, if you care to look.
Anyway, from what I can gather, this is where the final piece of the launch code is hidden. It seems to be a two digit number.
Is there any writing on the top of the hatch? Anything stamped into the metal? Take the last letter, and convert it to a number using the code I’ll flick through to you now. Get back to me once you’re done.