The R.A.F. Fairford air base, from which a dozen American B-1 bombers were withdrawn last weekend, has been a mainstay of U.S.-British military cooperation since it opened in 1944.
A 22-year-old from London was the seventh person to be arrested by the counterterrorism police investigating an incident at R.A.F. Fairford last month.
A police roadblock near the R.A.F. Fairford air base. Prime Minister Andy Burnham of Britain said on Wednesday that there were “strong indications that Iran played a part” in the previous weekend’s events there.