The Grumman (now Northrop Grumman) EA-6B Prowler is a unique national asset that can be deployed from land bases and aircraft carriers to monitor the electromagnetic spectrum and actively deny an adversary the use of radar and communications. The EA-6B is a unique, high-demand low-volume (HDLV) national asset that provides electronic attack for the Navy, Marines, and Air Force. The EA-6B Prowler was designed to complement the Navy's defenses in today's electronic warfare environment. Electronic countermeasures required improvement to compete with the ever-increasing complexity of hostile radar-guided guns, missiles and aircraft. The Prowler was the first aircraft built from the drawing boards to fulfill the role of an electronic warfare aircraft. The EA-6B Prowler is included in every aircraft carrier deployment. The EA-6B's primary mission is to protect fleet surface units and other aircraft by jamming hostile radars and communications. The EA-6B is an integral part of the fleet's first line of defense, and will remain so well into the next century. As a result of restructuring DoD assets in 1995, the EF-111 Raven was retired, and the EA-6B was left as the only radar jammer in DoD. Five new squadrons were stood up. Four of these squadrons are dedicated to supporting USAF Aerospace Expeditionary Force wings.