Angeline Cheek is preparing for disaster. The indigenous organizer from the Fort Peck reservation in Montana fears that the proposed Keystone XL pipeline could break and spill. But environmental catastrophe is not the most immediate threat. The government has characterized pipeline opponents like her as extremists" and violent criminals and warned of potential "terrorism". Recently released records [suggest] that police were organizing to launch an aggressive response to possible Keystone protests, echoing the actions against the Standing Rock movement in North Dakota. There, officers engaged in intense surveillance and faced widespread accusations of excessive force. Documents obtained by the ACLU ... have renewed concerns from civil rights advocates about the government's treatment of indigenous activists known as water protectors. Notably, one record revealed that authorities hosted a recent "anti-terrorism" training session in Montana. The Department of Homeland Security (DHS) and the Federal Emergency Management Agency also organized a "field force operations" training to teach "mass-arrest procedures", "riot-control formations" and other "crowd-control methods".