An American's whereabouts were unknown on Friday after Iran shot down a U.S. fighter jet, as questions mounted online over what happened to the missing service member and if the Trump administration would comment on it. President Donald Trump had not yet commented on the attack, which was the first time an American jet had been shot down since the military strikes launched five weeks ago. It was unknown what had happened to the missing pilot. The president has apparently been briefed on the situation, White House Press Secretary Karoline Leavitt told CNN.