Lance Corporal Si Hambly loading Hellfire missiles on to the Westland Apache AH Mk 1. The Semi-Active Laser Hellfire air-to-ground missile is the Apache’s main anti-tank weapon, designed to kill fast-moving armour and adapted to take out thick-walled buildings. Up to sixteen missiles can be carried on board the aircraft, mounted on to four rails beneath the wings. Able to defeat all known armour, the 20-lb high explosive warhead packs a 5 million-lb-per-square-inch punch on impact and is laser guided from the cockpit for pinpoint accuracy.