U.S. President Donald Trump is greeted by Turkish President Recep Tayyip Erdoğan in Ankara ahead of NATO's annual summit in July. Photo by Turkish Presidency Office/UPI | License Photo

Aug. 12 (UPI) -- President Donald Trump confirmed he was smuggled off Air Force One and secretly boarded onto a different aircraft before departing the NATO Summit in Turkey for a flight to a British air base in July, amid a possible threat on his life.

Speaking to reporters at Joint Base Andrews in Maryland on Tuesday night, Trump said the decision to make the switch in Ankara was made by the "Secret Service and the military."

"I go by Secret Service and the military. They wanted me to go in a different flight, different plane. I just have to do what they say," he said.

NBC News said it had confirmation of reports that after apparently boarding Air Force One as normal, Trump was moved, secreted in a catering truck, to an unmarked VIP transport aircraft for the first leg of the July 8 flight back to the United States, via RAF Mildenhall.