A vapour trail in the empty air

      Well dawn arrived, as she always does, somewhat sheepishly this time, but high above the planet some military aircraft is making a lovely solid vapour trail.
      Is the aircraft from RAF Mildenhall flight testing some brilliant new 'we can see you having a pee behind the shed' monitoring equipment or is it simply some time-zone challenged airliner where they are serving lobster and champagne?
      We'll never get to know.
      Right, the two Jack Russels have had their pee, under observation from high above of course, so it must be time for a cup of tea and for them to have their breakfast.
      First class is pretty good.