of agents, foreign died., failed be also tipped off several british spies, guy burgess and donald maclean, in a 1951. yet despite two secret trials, he was allowed to go on working for mi six command to he defected to the soviet union in 1963. it is important to remember however, that most of the work of the soviet union's intelligence organization, the kgb and are the organizations. involved unglamorous matters and the high profiles buys like filthy war four more the exception than the rule. the book of spies -- the rise ,nd fall of the kgb in america, points out that the kgb in america, their operations involved largely industrialized espionage in the 1940's-1950's, conducted in the chemical, aviation, electronics and communications companies. they spied more on private sector engineers and government officials. these revelations of soviet espionage, coupled with the fall of china to communism in 1949, and the soviet union's successful testing of atomic 1949, asn september of well as these revelations of soviet espionage, adding to the inside -- added to the anxieties americans. communi