President Donald Trump secretly swapped from Air Force One to a smaller C-32A after a July 8 NATO summit in Ankara in response to a credible Iranian assassination threat, with journalists and some staff left on a decoy Air Force One while he flew on the non-public aircraft to Britain. The operation, described as an elaborate deception, used an airport catering truck and a low-profile call sign, and was defended by officials as a security measure amid tensions with Iran.