In an immediate mission, how many transmissions are typically required to send the call for fire?

In an immediate mission, the standard protocol for sending a call for fire typically requires just one transmission. This is because the urgency and nature of an immediate mission necessitate a swift and efficient way to communicate. The single transmission must convey all necessary details concisely, including the target location, the request for fire, and any pertinent information such as the type of ordnance desired and the method of engagement. The focus on speed means that multiple transmissions could lead to delays, which is critical to avoid in immediate situations where quick support is needed. Therefore, one comprehensive and clear transmission is sufficient to initiate the fire request effectively.