Well I am no fan of Davis either in terms of politics or competence although he does, rather belatedly seemed to have learned that all this 'European Nonsense' isnt nonsense and isnt straightforward.
However he is the minister responsible for something very important and an RAF jet seems fine to me in these circumstances.. Of course if Boris or Gove are involved I suggest the Airlander as singularly appropriate.
As for all this idiocy about Lancasters and Germany that sort of attiude got us into this Brexit mess, it was over 70 years ago who is the better off nation nowadays