Most accurate human-portable anti-aircraft missile

The US-made Stinger missile, introduced in the early 1980s, is 1.5 m (5 ft) long, weighs 9.9 kg (22 lb), and has a range of about 4.8 km (3 miles) and a speed of about 2,000 kph (1,300 mph). Based on figures from Afghanistan it is said to have a 79 % success rate. The Stinger's cryogenically cooled infrared seeker distinguishes between an aircraft's infrared signature and countermeasures such as flares. In the early 1990's, the US Army took delivery of the Stinger POST (Passive Optical Seeker Technology), which is flown to target by a programmable microprocessor. The missile can 'think', and once it is locked on, there is little the pilot of the target aircraft can do other than outfly the missile or eject.