A Special Nuclear Materials (SNM) cargo left AWE Burghfield on Monday 11th June in High Security Vehicle (HSV) Number 4.
With only two non-military escort vehicles, it traveled at 60mph to RAF Brize Norton in Oxfordshire where it met a waiting aircraft on the runway. As soon as the cargo was transferred by fork-lift truck into its side loading bay, the plane took off for the USA. Nuclear warhead materials are exchanged between the UK and USA under the 1958 Mutual Defence Agreement.