Being beyond a certain age, I remember a time when the US public at large went through a major dig for victory campaign building fall out shelters on the realisation that the Russians had nuclear whizz-bangs too. Some went to extraordinary lengths to equip their ground holes with all the trimmings and keep them secret.
Sadly, most, like the one shown here, would have offered as much protection as the UK's Protect and Survive policy, despite all the goodies.
However, I digress, except to observe that whoever built it simply did not have time to get there before the world ended. Nor do I think Boomer 2 was the only one that did not know it was there. I am still inclined to suggest that No6 is following our Caprician hero to see what he does.
That would not be the only flashback to 30+ years ago in this episode either. I remember more than a few chain smoking (and downright pickled) Medical Officers as well!
That he should be dismissive of alternative treatments for cancer, or not be aware of new working ones is not hugely unlikely either- Cancer is not something he would normally face as a military MO, but give them a blown of leg or massive chest wounds?
Though I wonder if these scenes were added to remind us those little strings are still there and being thought about.
Either way it has been a long time since I have enjoyed a science fiction show as much. With its strong characterisations and earthy feel, it is IMHO superior to B5, provided they can keep it up
Other small thoughts-
I wonder what altitude Starbuck banged out at?
It strikes me that if her fighter was still in the process of burning up because of re-entry, which it clearly was, bailing out would still result in crispy Starbuck pancake.
And why, when they want an alien weapon, do they pick on the British Army's favourite weapon- the SA80?