Which element is typically unnecessary in an Immediate Suppression call?

The element that is typically unnecessary in an Immediate Suppression call is Target Tenacity. In Immediate Suppression situations, the primary focus is on engaging the target quickly to neutralize an immediate threat. Therefore, detailed information like the persistence of the target or its ability to withstand fire—referred to as Target Tenacity—is not essential at the moment of making the call.

In contrast, the other elements such as Method of Engagement, Observer Identification, and Method of Fire and Control are crucial as they provide the necessary information for accurately coordinating the fire support. The Method of Engagement specifies how the target will be engaged, Observer Identification helps in ensuring the correct observer is recognized and accountable for the call, and the Method of Fire and Control outlines how the fire will be directed and controlled to achieve the objective effectively. In Immediate Suppression, the urgency of the situation prioritizes these elements over assessing target perseverance.