Blackwater USA is a private military company and security firm founded in 1997 by Erik Prince and Al Clark. It is based in the U.S. state of North Carolina, where it operates a tactical training facility that it claims is the world's largest. The company trains more than 40,000 people a year, from all the military services and a variety of other agencies. The company markets itself as being "The most comprehensive professional military, law enforcement, security, peacekeeping, and stability operations company in the world". At least 90% of its revenue comes from government contracts, two-thirds of which are no-bid contracts.