No-Lone Zones contain ____________, nuclear weapon systems, or critical components.

No-Lone Zones are areas established to prevent solo operations involving sensitive or hazardous materials and systems, especially in the context of nuclear safety. The emphasis in these zones is on the presence and management of nuclear weapon systems or critical components, which must be overseen to ensure safety, security, and compliance with protocols.

In this context, the correct answer indicates that nuclear weapons are specifically prohibited from being operated in these zones without supervision or assistance, given the significant risks and consequences associated with their handling. Proper checks and balances must be in place to mitigate any potential dangers, reaffirming the rationale behind the establishment of No-Lone Zones.

While conventional weapons, support equipment, and personnel may also be present in a military environment, they do not encompass the same level of risk and regulatory oversight that nuclear weapons do, making the specific mention of nuclear weapons essential in defining the nature of No-Lone Zones.