In 13 October 2015, Rossy and Vince Reffet, wearing jetpacks, deployed from a helicopter flying at 5,500 feet (1,676 meters) and flew in a choreographed demonstration with an Emirates Airbus A380 cruising at an altitude of 4,000 feet (1,219 meters) over Dubai.[18][19] The flights were documented by the use of helmet-mounted cameras and third-party videos released in early November 2015. The videos show the pair soaring and diving around the airliner, flying in formation with it for about ten minutes.[20] A television program "City in the Sky, part 2"[21] about how airliner flights are run, showed at its start Yves Rossy and Vince Reffet flying in 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. He had to fall a distance to build up enough air speed for his airfoils to work.