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This topic has appeared in the English Wikipedia rankings 1 time. It first appeared on 2026-07-12 and was most recently seen on 2026-07-12.
A permissive action link (PAL) is an access control security device for nuclear weapons. Its purpose is to prevent unauthorized arming or detonation of a nuclear weapon.
The United States federal government's definition is:A device included in or attached to a nuclear weapon system to preclude arming and/or launching until the insertion of a prescribed discrete code or combination. It may include equipment and cabling external to the weapon or weapon system to activate components within the weapon or weapon system.
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