Even then, the priority for nukes is availability not “security” - https://en.m.wikipedia.org/wiki/Permissive_action_link https://en.m.wikipedia.org/wiki/Permis

Even then, the priority for nukes is availability not “security” - https://en.m.wikipedia.org/wiki/Permissive_action_link https://en.m.wikipedia.org/wiki/Permissive_action_link > For a long time the U.S. military resisted the use of PALs. It feared the loss of its own independence, and it feared malfunction, which could put warheads out of action in a time of crisis.