Keystone XL pipeline opponent cites terrorism concerns 06 Jun 2014 Billionaire Democratic donor and environmental activist Tom Steyer opened a new front Wednesday in his campaign to derail the Keystone XL project by commissioning a study of the oil pipeline's vulnerability to terrorism. The three-month study, conducted by former Navy SEAL David M. Cooper, concluded that Keystone XL was an especially attractive target for terrorists because of its high political visibility and route through parts of the Ogallala aquifer, which is the source of drinking water for millions of people in the Plains states…”I found that a handful of terrorists could use just four pounds of explosives at each of three pump facilities located” along the route “to cause explosions that could trigger a catastrophic spill of 7.24 million gallons,” he wrote, according to a redacted version of the report provided to the media.