Hendrik van Rooyen
Hendrik van Rooyen completed his polygraph training with the Israel Polygraph Institute in 1985. He obtained a B Admin degree at the University of South Africa. Hendrik was an officer in the South African Defence Force from 1972 to 1974, after which he joined the National Intelligence Service. He assisted with the establishment of polygraphy in the National Intelligence Service, as well as in other government agencies. Hendrik gained extensive experience in all the disciplines of Counter-Intelligence, specialising in personnel security. He is a founder member of PISA.
Johan Stiglingh completed his polygraph training with the Israel Polygraph Institute in 1990. He spent seventeen years in the National Intelligence Service, where he was primarily involved in Counter- Intelligence. He has extensive experience in personnel screenings and investigations, and was in charge of the polygraph unit of the National Intelligence Service for two years. Johan joined PISA in 1996.