Something like that might have heading to Prestick? Lots of US military aircraft seem to stop there to refuel.
Living in Dumfries and Galloway it's always amazing to see aircraft flying so low. Recently I was out in a small fishing boat with a friend on a small loch. We heard this loud rumbling which got gradually louder and then this huge aircraft flew over and I swear it must have been inches off the tree tops!! I'm sure it would be higher, but from where we were it looked really low. It was amazing to see it. The size was very impressive. I think it was an RAF carrier plane.