A Forward Air Controller (FAC) is a military officer responsible for directing air support operations from the ground. They work closely with ground troops to identify targets and coordinate air strikes, ensuring that aircraft can effectively engage enemy forces while minimizing risks to friendly units and civilians. FACs are typically trained in both ground combat and aviation tactics, allowing them to communicate effectively with pilots and ground forces. They often use various communication methods, including radio and visual signals, to guide aircraft during missions, making them crucial for successful joint operations in combat scenarios.