Trump says Air Force pilots described a round UFO flying three times faster than an F-22 fighter jet

President Donald Trump said Air Force pilots told him a mysterious round object flew past an F-22 fighter jet at three times its speed, while pledging to investigate claims that a secret government program studying UFOs could exist without the president's knowledge.

Trump made the comments during an interview with correspondent Ross Douthat that aired Sunday on CBS' "60 Minutes."

Douthat asked Trump whether anything the president had seen, heard or been told led him to believe there...