WASHINGTON - US President Donald Trump faced questions about the security of his new Air Force One plane gifted by Qatar, after he took an older jet home from a NATO summit this week.The billionaire president has been unable to contain his excitement over the retrofitted Boeing 747-8 aircraft, which took him to Ankara on its maiden trip outside the United States.Trump then abruptly announced in Turkey that he would send the aircraft ahead to a British airbase saying the decision was made to allow US troops to tour the luxury plane.The New York Times reported on July 10 that the new plane lacked the same security countermeasures boasted by the older jet, including anti-missile defenses. US media also reported that the Secret Service had advised the switch.Speculation was fueled by the fact