The A-3D Skywarrior was designed as a strategic bomber for the United States Navy (USN). However, it was used as a utility aircraft in the roles of an electronic recon aircraft and as aerial in-flight refueling tanker. It was the longest servicing and the heaviest aircraft used on an aircraft carrier.
The A-3D Skywarrior was one of three to be intended as an aircraft carrier strategic attack bomber. The other two were the North American AJ Savage and the North American A-5 Vigilante. the Douglas B-66 Destroyer was developed from the A-3D for the United States Air Force (USAF) as a tactical bomber, electronic warfare and recon aircraft in the early 1970s