Watch: Were the arrests near RAF Fairford 'pure luck'?

Watch: Were the arrests near RAF Fairford 'pure luck'? A husbandman who dialled 999 after spotting a group of "masked men" near RAF Fairford in the early hours of Sunday says she "foiled" their plans by "pure luck". However, she only has a "partial picture" of what occurred, Defence Secretary Wes Streeting noted. The RAF base, utilized by the United States military, was cited by President Donald Trump, who asserted that the US had kept the five individuals "under presumption for a agelong time". What actually took place? BBC Security Correspondent Frank Gardner offers his analysis. For ongoing updates, see: More connected the RAF Fairford incident.