The nuclear weapon surety two-person concept is designed to:

The two-person concept in nuclear weapon surety is a critical safety and security measure aimed at preventing unauthorized access and tampering with nuclear weapons. By requiring that two authorized personnel be present at all times when handling or accessing nuclear weapons, this concept effectively reduces the risk of a single individual acting independently to compromise the security of these weapons. This approach ensures that both individuals must verify each other's actions and decisions, creating a system of checks and balances that enhances the overall security of nuclear munitions by making unauthorized actions more difficult to achieve without detection.

This concept is a fundamental part of nuclear surety and ensures stringent protocols are followed, which is vital given the potential consequences associated with mishandling these types of weapons. The focus is on the human factors involved in security, thus making it a primary component of nuclear safety measures.