"We reviewed the vast majority the 659 overnight stays of Air Force crews in the vicinity at Glasgow Prestwick Airport between 2015 and 2019. Approximately 6% of those crews stayed at the Trump Turnberry," a US Air Force official told CNN Thursday.

The official added that "the review also indicated that about 75% of the crews stayed in the immediate vicinity of the airfield and 18% stayed in Glasgow."

The review was launched following a series of stories about Air Force personnel using the resort during refueling stops. Democratic lawmakers have also questioned military service members' use of the hotel.

Trump's pick to be the next Air Force secretary, Barbara Barrett, was asked during her confirmation hearing Thursday by Democratic Sen. Richard Blumenthal of Connecticut whether the Air Force should ban crews from staying at Trump-owned hotels.

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