What type of force is mandated at installations that support protection level (PL) 1, 2, or 3 resources?

The mandated type of force at installations supporting protection level (PL) 1, 2, or 3 resources is a Security Response Team (SRT). The SRT is specifically trained and structured to respond to security incidents that may occur at these levels, where the potential for threats against vital assets is higher. Their role includes ensuring the protection of these resources through quick deployment and effective management of any incidents that arise.

The SRT typically engages in various missions, including responding to breaches of security, conducting armed responses, and executing tactical operations to maintain safety and security. Their specialized training equips them to handle situations that could involve significant risks, emphasizing the importance of having a dedicated response force in place for high-value assets.

The other types of forces mentioned, such as a security patrol team, emergency response unit, or incident response team, have different functions and may not possess the same level of tactical capability or training specifically oriented towards dealing with security threats to PL 1, 2, or 3 resources. Thus, while they play important roles within the security framework, they do not fulfill the same critical requirement that the Security Response Team is mandated to address.