Credible missile threat led to secret aircraft switch for Trump

A threat that Air Force One could be targeted by a shoulder-fired missile prompted the Secret Service to secretly move President Donald Trump onto an unmarked government jet during a trip to Turkey last month, a person briefed on the matter said on Wednesday.

The threat emerged on the final day of Trump’s visit to Ankara for the NATO summit amid heightened tensions with Iran, the source said. The Secret Service deemed the threat to be credible and imminent, prompting an extraordinary operation...