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The RTX headquarters in Arlington, Virginia. Raytheon is a division of the company. Photo: J. David Ake/Getty Images

President Trump threatened to kneecap a division of RTX, the world's second-largest defense contractor, if it did not step up and invest in "plants and equipment."

Why it matters: This was the most specific in a series of warnings Trump sent out to American defense firms on Wednesday, ordering them to cap executive pay, halt all dividends and stock buybacks, and speed up production. Such interventions from the commander-in-chief are highly unusual.