Accounts of the operation's termination vary between historians. Gleijeses said that while the freighter was on its way to Nicaragua, a CIA employee went to Miller, and asked him to sign a document on behalf of the munitions department. Miller refused, and instead showed the document to his superiors, who in turn informed Acheson. Gleijeses writes that Acheson immediately spoke to Truman as a result of this document, and the operation was cut short. Nick Cullather writes that, due to Somoza spreading the word about the coup, the State Department decided the cover of the operation had been lost. Other diplomats began to learn of the operation, and on October 8, Acheson summoned Smith and called it off.