Project 637 was a covert initiative conducted by the U.S. government during the 1960s. Its primary aim was to explore the potential of using biological agents for military purposes. The project involved extensive research and testing to understand the effects of various pathogens on human health and behavior. The project was part of a broader program known as MKUltra, which sought to develop methods of mind control and psychological manipulation. Although Project 637 was eventually discontinued, it raised significant ethical concerns regarding the use of human subjects in experiments without consent.