Henry "Hank" Crumpton is a U.S. counterterrorism specialist, long a covert operator in the Central Intelligence Agency, whose identity became known in 2005. He became the U.S. State Department Coordinator for Counterterrorism, with the rank of Ambassador.  Simply known as "Hank" when running covert operations in Afghanistan,  energy and climate change issues "keep him up at night" in 2009.
- Robin Wright (12 September 2005), "In From the Cold and Able to Take the Heat", Washington Post
- Gary C. Schroen (2005), First In: An Insider's Account of How the CIA Spearheaded the War on Terror in Afghanistan, Ballentine, ISBN 0891418723
- Thomas Ricks (3 June 2009), "What worries Hank Crumpton", Foreign Policy
- David Kilcullen (2009), The Accidental Guerrilla: Fighting Small Wars in the Midst of a Big One, Oxford University Press, ISBN 9780195368345, p. 6