What provides immediate indirect and joint fires to neutralize enemy indirect fire weapons?

The correct choice is reactive counterfire. This concept is vital in battlefield scenarios where immediate responses are required to neutralize threats. Reactive counterfire involves using indirect fires to respond to enemy artillery or mortar threats that have already engaged friendly forces. The goal is to quickly target and suppress enemy indirect fire weapons, thus providing a protective measure for friendly troops.

Reactive counterfire is typically characterized by its timely execution, aiming to minimize the effect of enemy fire and prevent further casualties or damage. It is integral in maintaining the operational tempo and ensuring that friendly forces can continue their mission without the hindrance of enemy fire.

Understanding this principle is important for a Fire Support Team (FIST) as it emphasizes the need for rapid assessment of threats and the immediate allocation of fire support resources to mitigate those threats effectively.