After 2016 rocket explosion, Elon Musk’s SpaceX looked seriously at sabotage - The Washington Post

From an article adapted from the forthcoming book The Space Barons: Elon Musk, Jeff Bezos, and the Quest to Colonize the Cosmos; later in the article: "Musk concluded that SpaceX, not ULA or anyone else, was to blame. “It was a self-inflicted wound,” he said in the interview. “It took us a long time, but we were able to re-create the failure.”"

"Although they didn’t say so publicly at the time, SpaceX investigators were looking seriously at sabotage, Musk and SpaceX President Gwynne Shotwell said in their most extensive public comments since the explosion.

“We literally thought someone had shot the rocket,” Musk said in an interview last summer at SpaceX’s headquarters in Hawthorne, Calif. “We found things that looked like bullet holes, and we calculated that someone with a high-powered rifle, if they had shot the rocket in the right location, the exact same thing would have happened.”"

After 2016 rocket explosion, Elon Musk’s SpaceX looked seriously at sabotage - The Washington Post