I expected to have to say "that's not a barrel roll" but actually it was! That's a very difficult corkscrewing manoeuvre; imagine following the seam-line of a

I expected to have to say "that's not a barrel roll" but actually it was! That's a very difficult corkscrewing manoeuvre; imagine following the seam-line of a toilet-roll tube in the air. It requires coordination of all three controls in a continuously changing manner. Much different to an aileron roll that most people mistake for a barrel. Very impressive indeed.