What is a critical action to take with primary callers during an incident?

Gathering as much information as possible from primary callers during an incident is critical for several reasons. Primary callers can often provide real-time insights into the situation, including the location of the shooter, the number of potential victims, and any details about the shooter's appearance and behavior. This information is invaluable for first responders as it helps them assess the scene, make informed decisions, and strategize their approach to ensure the safety of all involved.

In addition, by engaging with primary callers and encouraging them to share details, responders can help establish a better understanding of the immediate context, which is crucial for effective incident management. This information can also assist in prioritizing resources and responding appropriately in a chaotic environment.

The other options, while well-intentioned, may not be the best course of action. Instructing callers to evacuate without knowing the situation's full scope could put them or others in danger. Advising them to activate emergency alerts might be useful, but it does not directly enhance the immediate understanding of the situation. Telling individuals to engage with the shooter is dangerous and counterproductive, as it can escalate the incident and put lives at greater risk. Therefore, gathering information from primary callers forms the backbone of an effective response strategy.