Jack Montague studied crime scene investigation under Dana C. Kuhn, head of the Boston crime lab during the strangler investigation, and was a supervisor and instructor for the City of Newburgh New York Police Department. Injured in the line of duty, he worked as a private investigator and Eastern Council of the International Federation of Fly Fishers.His testimony was a central factor in the City of Newburgh corruption investigations in 1972, according to the CATO Institute, as one of the four most serious cases of law enforcement corruption in US history. Jack then went to work for Gary Loomis as a fly-fishing consultantand moved to Florida, where he continued to work for G. Loomis as a manufacturer's representative, for the FFF, and as an outdoor writerand conservation advocate.