For the privilege, a bodyguard "has to be prepared to give his life for his client," said Sako, who teaches hand-to-hand combat, target shooting and other skills.
A basic protection service, with two bodyguards, will cost a client about $3,000 a month, said Sako, in a country where three in four people live in extreme poverty.
The official minimum salary in Venezuela is about $30 a month.