A shadowy international mercenary and security firm known as TigerSwan targeted the movement opposed to the Dakota Access Pipeline with military-style counterterrorism measures, collaborating closely with police in at least five states, according to internal documents obtained by The Intercept. The documents provide the first detailed picture of how TigerSwan, which originated as a U.S. military and State Department contractor helping to execute the global war on terror, worked at the behest of its client Energy Transfer Partners, the company building the Dakota Access Pipeline, to respond to the indigenous-led movement that sought to stop the project.

Internal TigerSwan communications describe the movement as “an ideologically driven insurgency with a strong religious component” and compare the anti-pipeline water protectors to jihadist fighters. One report, dated February 27, 2017, states that since the movement “generally followed the jihadist insurgency model while active, we can expect the individuals who fought for and supported it to follow a post-insurgency model after its collapse.” Drawing comparisons with post-Soviet Afghanistan, the report warns, “While we can expect to see the continued spread of the anti-DAPL diaspora … aggressive intelligence preparation of the battlefield and active coordination between intelligence and security elements are now a proven method of defeating pipeline insurgencies.”

More than 100 internal documents leaked to The Intercept by a TigerSwan contractor, as well as a set of over 1,000 documents obtained via public records requests, reveal that TigerSwan spearheaded a multifaceted private security operation characterized by sweeping and invasive surveillance of protesters.

As policing continues to be militarized and state legislatures around the country pass laws criminalizing protest, the fact that a private security firm retained by a Fortune 500 oil and gas company coordinated its efforts with local, state, and federal law enforcement to undermine the protest movement has profoundly anti-democratic implications. The leaked materials not only highlight TigerSwan’s militaristic approach to protecting its client’s interests but also the company’s profit-driven imperative to portray the nonviolent water protector movement as unpredictable and menacing enough to justify the continued need for extraordinary security measures. Energy Transfer Partners has continued to retain TigerSwan long after most of the anti-pipeline campers left North Dakota, and the most recent TigerSwan reports emphasize the threat of growing activism around other pipeline projects across the country.

The leaked documents include situation reports prepared by TigerSwan operatives in North Dakota, South Dakota, Iowa, Illinois, and Texas between September 2016 and May 2017, and delivered to Energy Transfer Partners. They offer a daily snapshot of the security firm’s activities, including detailed summaries of the previous day’s surveillance targeting pipeline opponents, intelligence on upcoming protests, and information harvested from social media. The documents also provide extensive evidence of aerial surveillance and radio eavesdropping, as well as infiltration of camps and activist circles.

TigerSwan did not respond to a request for comment. Energy Transfer Partners declined to comment, telling The Intercept in an email that it does not “discuss details of our security efforts.”