Douglas Alexander Zembiec (April 14, 1973 – May 11, 2007), nicknamed the "Lion of Fallujah" and also referred to as the "Unapologetic Warrior", was an officer in the United States Marine Corps and member of the CIA's Special Activities Division's Ground Branch who was killed in action while serving in Operation Iraqi Freedom. He is best known for his actions during Operation Vigilant Resolve, which were detailed in the book No True Glory by Bing West and for an article that ran in The Wall Street Journal following his death.