The US military has evacuated multiple aircraft from RAF Mildenhall in eastern England following a reported threat linked to Iran, according to officials and flight tracking data. At least 10 KC-135 Stratotanker refueling aircraft and three V-22 Osprey transport planes departed the base on November 10, 2026, with destinations including Germany, Italy, Spain, and Scotland. The movements follow an upgrade of security protocols at RAF Mildenhall and RAF Lakenheath to Force Protection Condition (FPCON) Charlie, the second-highest alert level, which is typically activated when intelligence suggests terrorist activity is likely.
US European Command confirmed the aircraft rotations but declined to specify the nature of the threat or the rationale behind the evacuations, citing operational security. A US official stated the measures were taken to ensure the safety of personnel and installations. The UK Ministry of Defence (MoD) reiterated that it does not comment on the activities of other nations’ militaries, while emphasizing that security at British bases is under constant review.
Flight tracking data, verified by multiple outlets including the BBC and CBS News, showed the aircraft dispersed to RAF Spangdahlem in Germany, Aviano Air Base in Italy, and Glasgow Prestwick Airport in Scotland. The Ospreys were relocated to nearby RAF Lakenheath, another US-operated base in Suffolk. The Wall Street Journal first reported the evacuations, citing unnamed sources familiar with the matter, while The War Zone initially flagged the heightened security status at the two bases.
-- Immediate Response & Security Measures --
The US military’s decision to elevate security to FPCON Charlie at RAF Mildenhall and RAF Lakenheath marks a significant escalation in defensive posture. FPCON Charlie is reserved for situations where there is credible intelligence indicating a potential terrorist attack, according to the US Department of Defense’s force protection guidelines. The US Air Force stated that aircraft rotations between installations are routine and can occur for training, operational requirements, or other unspecified reasons, though officials did not rule out the threat as a factor in the latest movements.
A spokesperson for US European Command emphasized that the service maintains vigilance and works closely with host nations to secure installations. The UK government has invested over £2 billion ($3.8 billion) in air defense and counter-drone capabilities, according to Prime Minister Andy Burnham’s office, which described the protection of military bases as a top priority. The MoD spokesperson added that security measures are kept under constant review.
-- Context: Recent Threats & Historical Tensions --
The evacuations follow months of heightened concerns over Iran-linked threats to US military assets in Europe. In September 2026, British authorities arrested five men near RAF Fairford after discovering three vans near the base. While no explosives were found, two suspects were later charged with assisting a foreign intelligence service believed to be Iran. The incident prompted the US to withdraw B-1B Lancer strategic bombers from RAF Fairford, a base previously used for strikes against Iran.
Tehran has denied involvement in the alleged plot, and Iranian officials have not commented on the latest evacuations. The US has historically used UK bases, including RAF Fairford and RAF Mildenhall, for military operations in the Middle East, raising concerns about potential retaliation or espionage targeting these facilities.
-- Expert & Official Reactions --
Lord Ricketts, a former UK National Security Adviser, described the aircraft as large, vulnerable targets and suggested the evacuations may reflect an abundance of caution given the lack of clarity on the threat. He stated, “Nobody knows at this stage what this information was. I suspect part of it is an abundance of caution.”
Education Secretary Lucy Powell declined to comment on the specifics of the operation but affirmed that the UK government takes security at its military bases seriously and acts swiftly when necessary. A US official reiterated that the measures were proactive, stating, “We take proactive measures to ensure our aircraft, our people, and our installations remain safe and secure.”
-- Military Significance & Operational Impact --
RAF Mildenhall is home to the US Air Force’s 100th Air Refueling Wing, the only permanent refueling wing in Europe, operating the KC-135 Stratotanker, a four-engine jet capable of carrying up to 83,000 pounds of cargo. The Osprey tiltrotor aircraft, which combine the capabilities of a helicopter and a fixed-wing plane, are often used for troop transport and special operations. The relocation of these assets could temporarily disrupt refueling and transport operations across Europe, though US officials have not indicated whether the movements are permanent.
The US Air Force emphasized that aircraft rotations are a standard practice and may not necessarily indicate an imminent threat. However, the concurrent security escalation at two major bases suggests a coordinated response to a specific risk assessment, even if the exact nature of that risk remains undisclosed.
-- Ongoing Uncertainty & Next Steps --
As of the latest reporting, US and UK officials have not provided further details on the threat, its source, or the duration of the elevated security measures. The Wall Street Journal noted that the exact nature of the threat is still under discussion among US officials, leaving open questions about whether the risk was imminent, general, or part of a broader pattern of Iranian activity. The US European Command reiterated that it would not comment on force protection measures for operational security reasons.
The UK government has stated that it continues to work with allies to assess and mitigate risks, while the US has framed the evacuations as a precautionary measure. The lack of transparency has left analysts and observers to speculate about the underlying intelligence, though no further incidents have been reported at the affected bases.