And even if you survive the explosion and fallout, chances are you wont survive the logistic issues it would trigger, especially in large cities.

Edit, for reference: https://en.wikipedia.org/wiki/Multiple_independently_targeta...

It's also misleading because it's talking about a bomb 1/10th the size of the Hiroshima nuclear detonation, while today, even just India and Pakistan alone have nuclear capabilities that are a hundred times beyond that. The implications not just from the initial strikes but the infrastructural devastation that would follow are impossible to estimate.

I suspect the kind of civil defence training described on that page would probably help with a small scale terrorist level attack. However, I don't think it would achieve very much in a full scale attack and certainly not the scale of attacks likely during the 1980s and on densely populated areas of Europe.

Where I sit now in Scotland is within range of about 5 different high value Cold War targets - I don't think Duck and Cover would achieve very much.