According to a United States Air Force spokesman, U.S. Air Force personnel at the Royal British Air Force Base Lakenheath responded to suspicious activity by unauthorized UAVs. According to the spokesman, the incident happened on Friday evening at the American base in East Anglia; None of the crew was injured, and the aircraft and infrastructure were not damaged. In recent weeks, the United States withdrew from Britain bombers that were used for attacks related to Iran, and also transferred large refueling planes from Britain to Germany.