The A-4, also known as the Douglas A-4 Skyhawk, is a carrier-capable attack aircraft developed by Douglas Aircraft Company in the 1950s. It is a lightweight, subsonic jet designed for close air support and ground attack missions. The A-4 features a distinctive delta wing design, which contributes to its agility and maneuverability. First flown in 1954, the A-4 was widely used by the United States Navy and Marine Corps, as well as several other countries. Its compact size and versatility allowed it to operate from aircraft carriers and land bases, making it a popular choice during the Vietnam War and beyond.