Sunday’s unveiling of the Calidus B-250 light attack turboprop answered a few of the many obvious questions concerning the specification and future of this Brazilian-designed machine.

Al Worden, Command Module pilot of the Apollo 15 Moon mission in 1971, now describes himself as “Colonel, USAF-Retired” -- but that final word should not be taken literally.

It was born earlier this year with the unimaginative name C-FNXK, but the Bombardier Global Express (Global 6000) in the static display at Dubai would be better named “Lucy” – because it is indeed “In the Sky with Diamonds”.