Which system is designed specifically to counteract adversary air and missile threats?

The choice of Air Defence as the correct answer highlights its primary purpose in military operations, which is to protect against air and missile threats posed by adversaries. Air Defence systems encompass a wide range of technologies and strategies specifically developed to detect, intercept, and neutralize incoming aerial threats. This includes various platforms such as surface-to-air missiles, anti-aircraft artillery, and radar systems designed to monitor the airspace.

The effectiveness of Air Defence lies in its integrated approach, combining detection, tracking, and interception capabilities to provide a layered defense against an array of aerial threats including aircraft, drones, and ballistic missiles. These systems are crucial for ensuring the safety of both military and civilian assets in a conflict zone.

In contrast, the other options refer to different capabilities within the broader realm of electronic warfare or defense, but they do not focus specifically on counteracting air and missile threats. Electronic Warfare Support relates more to gathering intelligence and situational awareness, Control Systems pertain to the management of various military operations, and the Strategic Defence Initiative was a proposed missile defense system that focused more on a theoretical high-tech approach rather than active, current air defense systems.