Gerald Vincent Bull (March 9, 1928 – March 22, 1990) was a Canadian engineer who developed long-range artillery. He moved from project to project in his quest to economically launch a satellite using a huge artillery piece, to which end he designed the Project Babylon "supergun" for the Iraqi government. Bull was assassinated outside his apartment in Brussels, Belgium in March 1990.
Eugène François Vidocq (French pronunciation: [øʒɛn fʁɑ̃swa viˈdɔk]; July 24, 1775 – May 11, 1857) was a French criminal and criminalist whose life story inspired several writers, including Victor Hugo and Honoré de Balzac. The former criminal became the founder and first director of the crime-detection Sûreté Nationale as well as the head of the first known private detective agency, Vidocq is considered to be the father of modern criminology and of the French police department. He is also regarded as the first private detective.