I get the feeling this incident at RAF Fairford is going to turn into a great big nothingburger and the "terrorists" (who have now been released on bail, which seems unlikely if the police still think they're terrorists) will be nothing of the sort. (Whatever fantasy Trump is having about "Scotland Yard" at the time.) Lots of speculation on UK Reddit that they were stealing fuel, which is apparently quite common in the area. They probably should have avoided a US airbase though.