Questions emerge after NATO summit flight
Trump first flew aboard the retrofitted Boeing 747-8 on July 1, but scrutiny intensified after he returned from the NATO summit in Ankara on July 10 aboard an older presidential aircraft.
According to The New York Times, the new jet lacks some of the advanced security countermeasures fitted to the existing Air Force One fleet, including anti-missile defense systems.
Trump did not specify what upgrades would be installed but indicated the aircraft would soon be enhanced before returning to service.
