Kenneth A. Daigler is a former CIA operations officer who served for nearly 25 years in the clandestine service, including multiple overseas assignments and senior positions at CIA headquarters. After retiring from the CIA, he turned his attention to writing and historical research, with a particular focus on intelligence operations during the American Revolution. He is the author of "Spies, Patriots, and Traitors: American Intelligence in the Revolutionary War" (2014, Georgetown University Press) and, as P.K. Rose, he authored Founding Fathers of Intelligence and Black Dispatches: Black American Contributions to Union Intelligence During the Civil War (CIA.gov).