The Sukhoi PAK FA (Russian: Perspektivny Aviatsionny Kompleks Frontovoy Aviatsii, literally "Prospective Airborne Complex of Frontline Aviation") is a twin-engine jet fighter being developed by Sukhoi for the Russian Air Force. The Sukhoi T-50 is the prototype for PAK FA. The PAK FA is one of only a handful of stealth jet programs worldwide.

The Piasecki H-25 Army Mule/HUP Retriever was a compact single radial engine, twin overlapping tandem rotor utility helicopter developed by the Piasecki Helicopter Corporation of Morton, Pennsylvania during the late 1940s and produced during the early 1950s. The company changed its name in the 1956 to Vertol Aircraft Corporation and subsequently was bought by Boeing Aircraft Company in 1960, and became Boeing-Vertol.

The Shenyang J-31 (or "FC-31 fifth Generation Multi-Purpose Medium Fighter") also known as the "Gyrfalcon"  or "Falcon Hawk" by some military enthusiasts, is a twin-engine, mid-size fifth-generation jet fighter currently under development by Shenyang Aircraft Corporation.

The Hawker Siddeley Harrier GR.1/GR.3 and the AV-8A Harrier were the first generation of the Harrier series, the first operational close-support and reconnaissance attack aircraft with vertical/short takeoff and landing (V/STOL) capabilities.

The first generation T-34 medium tank made its debut in combat during the summer of 1941, when the Wehrmacht launched its invasion of the Soviet Union. The T-34 easily outclassed the German PzKpfw III and IV models, thanks to its hard-hitting 76.2mm main gun, thick frontal armor, wide tracks, and overall superior mobility.

It may just be the most sophisticated warplane ever built. Virtually invisible to radar, the F-117 Ghostrider, better known as the "Stealth", has revolutionized the tenets of air warfare. Developed in secrecy, the Stealth made its combat debut over Panama in the late nineteen-eighties and was again employed in the Gulf War a few years later.