US President Donald Trump hides in catering cart to board secret flight in Turkey amid potential Iranian assassination threat'The video released by the Washington Post shows an airport catering truck positioned alongside the presidential 747. The vehicle's elevated catering container was raised to aircraft-door level, allowing Trump and aides to leave the 747 without being seen by the press.Trump then secretly boarded the older-model plane in Ankara, which was bound for a US military base in the UK.