Earlier this year, in a chat with Brian Tyler Cohen, Obama said "they're not being kept in... Area 51," suggesting there is no underground facility unless an enormous conspiracy hid it from the president.
President Trump accused Obama of revealing classified information and called it "a big mistake." Trump then ordered a review of UFO files, directing Defense Secretary Pete Hegseth to dig in. Hegseth responded, "We're digging in... we're going to be in full compliance" and said he "gets to do the review and find out along with you."