Which mission type is appropriate when engaging a target that has taken friendly elements under fire?

The mission type that is appropriate when engaging a target that is firing on friendly elements is Immediate Suppression or Immediate Smoke. This type of mission is critical in resolving an immediate threat to friendly forces by rapidly delivering firepower on the identified target. The urgency of the situation necessitates that medium or intensive fire support be applied directly to suppress or neutralize enemy fire quickly.

Immediate Suppression aims to minimize the risk to friendly troops by quickly disrupting the enemy's capability to inflict further harm, thus providing a timely response to protect forces on the ground. In scenarios where friendly troops are at risk, time is of the essence, and this mission type allows for a swift reaction to a volatile engagement, potentially saving lives and preserving combat effectiveness.

Other mission types such as Adjust Fire or Suppression may not provide the immediacy required in this context, as they typically involve a more measured approach to fire delivery and target engagement. FFE (Fire for Effect) generally follows an adjustment phase and may not respond quickly enough to an ongoing threat.