Why did Trump fly home on the old Air Force One?

Secret Service Urged Trump to Skip Qatar-Donated Jet for Return from NATO Summit

The Hill — Home NewsThe Secret Service advised Trump to fly home from the NATO summit in Turkey on the old standard Air Force One rather than the new Qatar-donated luxury jet, citing security concerns about the Qatari aircraft's lack of key defensive features. The White House initially called the switch a deliberate "misdirection," but sources later confirmed it was security-driven. Trump had flown to Turkey on the Qatari jet but made the return leg on the older Boeing VC-25. During the trip Trump told a female reporter that if Iran attacked Air Force One, "if I go, you go" — a remark that drew wide coverage. Left-leaning outlets mocked the episode as a self-inflicted embarrassment over a controversial foreign gift.