Stay up to date with notifications from The Independent Notifications can be managed in browser preferences. All News Sport Culture Lifestyle Trump and Rubio both trip on steps up to Air Force One The Boeing 747 jet gifted by Qatar to the U.S. last year is scheduled to be ready for service as a temporary presidential plane by this summer, having completed modifications and flight testing. The jet underwent a reported $400 million overhaul to install top-secret communications equipment and sweep for spy technology, while largely retaining its lavish Qatari interior, including plush couches and faux library bookcases. The acceptance of the jet sparked controversy, with critics citing national security risks, potential violations of constitutional prohibitions on foreign gifts, and ethical concerns due to Qatar's alleged support for U.S. adversaries.…