WASHINGTON — Presidents have taken secret overseas trips in the past for security reasons, with schedules and logistics kept classified until after the fact to protect the commander in chief. But not like the one President Donald Trump took in July. After a NATO summit in Turkey , Trump stowed away in an airport catering container to slip into another plane while Air Force One — filled with White House officials, security and support staff, and reporters — was sent into the sky essentially as a decoy, just in case Iran made good on a credible threat of an attack. Upon stopping in Britain, Trump sneaked back aboard the presidential plane undetected and scoffed when asked about potential danger. “If I go, you go. Right?” he told reporters — gliding past the fact that if the plane had been shot down, the president wouldn't have been aboard. That Trump's whereabouts were concealed then, and for weeks afterward, is believed to be unprecedented — even in a modern world where security-related subterfuge is not uncommon. “We have absolutely seen the president fly on unmarked or dec