President Trump left the NATO summit in Turkey earlier this month aboard an older Air Force One jet instead of the newer Boeing 747-8 gifted by Qatar, U.S. officials told CBS News. The decision followed detection of a credible plot by Iran and allied proxy groups to fire a missile at the presidential plane.

Trump initially flew to Ankara, Turkey, on the new $400 million Air Force One, which the U.S. accepted from Qatar last year and retrofitted for presidential use. However, he switched to the older plane for his flight from Ankara to the United Kingdom before returning to the U.S. on the newer aircraft.

CBS News reported that the swap was made at the suggestion of the Secret Service as a precaution amid escalating tensions in the U.S.-Iran conflict. The older Air Force One jets are equipped with laser technology designed to blind incoming missiles and employ diversion tactics, according to sources familiar with the matter.

White House press secretary Karoline Leavitt stated, "The new Air Force One is perfectly safe for the President's travels, but will receive additional upgrades and enhancements in the fall which will take approximately one month to complete. During that time, the President will fly on the old Air Force One."

The initial report of threats from Iranian proxies was first published by The New York Times. The credible threat and subsequent precautionary measures have raised questions about the security features of the newer presidential plane.

Sources