The Grumman A-6 Intruder was designed as the replacement of the A-1 Skyraider. It's the first all-weather attack aircraft of the US Navy. The aircraft was known as the A2F before 1962 and got the new name ,the A-6 Intruder, in service. The outstanding all-weather capability soon made the A-6 the main strike force of the Navy and Marines, and devoted into the Vietnam War. From 1979, all of the A-6E Intruders were armed with the AN/ASS-33 detection and ranging set, which was a part of the TRAM system. They were located inside a small turret under the radome. The A-6E TRAM participated in most of the military actions of the Navy in last century. All of the Intruders were replaced by the F/A-18E/F Super Hornet in 1997.