Some of the early weapons were really primitive [1], I have read a suggestion that it wouldn't have been possible to land a plane with an armed bomb aboard and

Some of the early weapons were really primitive [1], I have read a suggestion that it wouldn't have been possible to land a plane with an armed bomb aboard and there was no way to disarm it. [1] https://en.wikipedia.org/wiki/Blue_Danube_%28nuclear_weapon%29 https://en.wikipedia.org/wiki/Blue_Danube_%28nuclear_weapon%...