<P> The Mozambique Drill, also known as the Failure Drill or Failure to Stop drill, is a close - quarters shooting technique that requires the shooter to fire twice into the torso of a target (known as a double tap to center of mass), and follow up with a more difficult head shot that, if properly placed, will instantly stop the target . </P> <P> According to anecdotal history, the technique originated with a Rhodesian mercenary, Mike Rousseau, engaged in the Mozambican War of Independence (1964 - 1974). Fighting at the airport at Lourenço Marques (modern - day Maputo), Rousseau rounded a corner and encountered a FRELIMO guerrilla, armed with an AK - 47 assault rifle, at 10 paces . Rousseau immediately brought up his Browning HP35 pistol and performed a double tap maneuver, a controlled shooting technique in which the shooter makes two quick shots, to the target's torso . Rousseau hit the target on either side of the sternum, usually enough to incapacitate or kill outright . Seeing that the guerrilla was still advancing, Rousseau attempted a head shot that hit the guerrilla through the base of his neck, severing the spinal cord . Rousseau related the story to an acquaintance, small arms expert Jeff Cooper, founder of the Gunsite Academy shooting school, who incorporated the "Mozambique Drill" into his modern technique shooting method . </P>

One in the head two in the chest