The first images of Qatar's donated Boeing 747-8 aircraft, set to join the US Presidential Airlift Fleet, have surfaced online. The ultra-luxurious aircraft, originally used by the Qatari royal family, is undergoing rapid modifications and testing to serve as an interim Air Force One until Boeing delivers the delayed VC-25B presidential jets. Nicknamed the "VC-25B Bridge Aircraft," the jet is expected to enter service this summer and could soon carry President Donald Trump. The development comes amid years of delays in America's next-generation Air Force One programme. Here's everything you need to know about the aircraft, the controversy surrounding it, and why these leaked images are making headlines around the world.