US evacuates 13 military aircraft from second UK base as new Iran threat raises alarm

The U.S. Air Force abruptly relocated more than a dozen aircraft from RAF Mildenhall in eastern England amid an emerging security threat, U.S. officials confirmed Tuesday.

The Wall Street Journal first reported the move, citing sources who said the threat originated in Iran.

As U.S. officials assessed the threat's nature and urgency, commanders raised the base's security level to Force Protection Condition Charlie, the military's second-highest alert level, indicating a likely terrorist threat against personnel or facilities.

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U.S. Air Force KC-135, used for in-flight refueling, takes off from RAF Mildenhall Airbase. (AP Photo/Max Nash, File)

Flight-tracking data and open-source analysts with the Military Air Tracking Alliance identified 13 U.S. aircraft leaving the base late Monday, the Associated Press said.

Nine Boeing KC-135 Stratotankers were moved to airfields in Scotland, Germany and Spain.

Three CV-22B Ospreys were relocated to nearby RAF Lakenheath, which has hardened aircraft shelters.

A U.S. official told The Associated Press the moves were precautionary, noting that some aircraft were on rotational deployments while others were permanently stationed in the United Kingdom.

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American aircrews check a B-52 Stratofortress long-range subsonic bomber aircraft on the pan at RAF Fairford. The United Kingdom reportedly is refusing to let the United States use the base for a potential attack on Iran. (Getty Images)

The move marks the second major relocation of U.S. military aircraft from Britain in less than two months.

In early October, the Air Force pulled heavy bombers from RAF Fairford in Gloucestershire after British counterterrorism police stopped three suspicious vans headed toward the base Sept. 27.

Two men have since been charged under the United Kingdom's National Security Act.

Separately, the Justice Department unsealed indictments against three Iranian-backed operatives on Tuesday accused of involvement in coordinated terrorist plots across Europe, including RAF Fairford.

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The main gate of RAF Fairford is pictured on September 27, 2026 in Fairford, United Kingdom. Police declared a major incident after evacuating residents from their homes in Whelford, a village about one mile from RAF Fairford, a military base that hosts U.S. Air Force bombers involved in the Iran conflict.  (David Bown/Getty Images)

RAF Mildenhall is home to the 100th Air Refueling Wing, the only permanently based U.S. tanker wing in Europe.

Its KC-135 Stratotankers support allied aerial refueling and long-range strike missions across the region.

Secretary of State Marco Rubio said Tuesday that Washington routinely repositions military forces.

"We are constantly repositioning forces around the world for a variety of reasons," Rubio told reporters when asked about the evacuation.

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A 10 Downing Street spokesperson said British air bases remain secure and that London and Washington continuously share intelligence on potential threats.

Emma Bussey is a breaking news writer for Fox News Digital. Before joining Fox, she worked at The Telegraph with the U.S. overnight team, across desks including foreign, politics, news, sport and culture.