In this fourth work, Olivier Pierfederici presents us the most explosive SOG techniques that combine effectiveness, explosiveness and simplicity. Led by him, we will learn distances, how to stop the adversary by kicking, defenses in front of the most regular street attacks such as fists, kicks, strangulations and grabbings, defenses against knife, stick and gun, third people's defense, in front of several attackers, and the 15 basic techniques of the Personal Defense S.O.G. Civilian Course The video concludes with a sample of the I.C.O.S.S system (International Confederation of Self Defense System) in charge of its founder, Alain Formaggio and Jean Michel Lerho, SOG technical director for Europe.