Level III threat infiltration is characterized by which of the following?

• A. Only large-scale conventional warfare
• B. Insiders threats
• C. Large numbers or small groups infiltrated; air/missile threats with little warning; beyond base security forces capability
• D. Cyber threats

Answer: (C)

Infiltration at this level means the enemy has slipped past initial defenses, either in large numbers or as small, covert teams, so traditional perimeter and base security can no longer handle the threat alone. The situation is further defined by the possibility of air or missile attacks with little warning, which requires rapid, higher-level responses beyond what the base security forces can provide. This combination—penetration by outside forces and the immediacy of a potential strike that outpaces normal defensive capabilities—defines the Level III scenario.

Insider threats describe personnel who abuse authorized access and fall under a different category, usually not involving external infiltration of the perimeter. Large-scale conventional warfare is broader and involves sustained conflict, not specifically the stealthy infiltration with limited warning described here. Cyber threats involve digital intrusions and are a separate domain from physical infiltration and air/missile risk.