 A television program "City in the Sky, part 2" about how airliner flights are run, showed at its start Yves Rossy and Vince Reffet flying with Rossy-type jetpacks, to show some principles of how airliners fly.It said that before being allowed to jetpack-fly in Britain, he had to get himself registered as an aeroplane, because parts of his body, rather than parts of his jetpack, acted as control surfaces; but he was exempted from the seat-belt rule.It showed him being lifted to flying height on the outside of a helicopter.