President Donald Trump departed a NATO summit in Turkey on an older blue Air Force One plane instead of the new Qatari-gifted jet he arrived in, a switch that raised security questions. The newer aircraft, which lacks some missile-defense systems, was sent to a U.S. base in England so troops could tour it. When reporters asked if threats from Iran—after recent American strikes—prompted the change, Trump did not confirm but said he was considered a top assassination target and would travel "by normal methods." The older jet's transponder was briefly turned off after takeoff, a security step used in conflict zones, while other leaders' flights remained trackable.