Which of the following actions is unnecessary during the assessment phase of an active shooter incident?

During the assessment phase of an active shooter incident, safety checks of responding units are generally considered unnecessary because the primary focus at that stage is to gather and verify information about the situation in order to develop an accurate understanding of the event and the immediate risks involved. This phase heavily emphasizes assessing incoming information, confirming the incident with witnesses, and checking for the validity of reports to formulate a timely and effective response.

Conducting safety checks on responding units usually occurs later in the response phase, where the emphasis shifts to ensuring that the personnel entering the scene are adequately equipped and protected based on the assessment data gathered. Safety checks can be important, but they do not align with the immediate goals of the assessment phase, which centers on understanding the scenario and making critical decisions based on verified information.