Consisting of advanced human flight performance tests / a series of predetermined high speed aerobatic freefly manoeuvres around and with at first one then two Space Balls, in 1996 Zipser developed the Atmosphere Dolphin FreeFly Licence Program and awarded Atmosphere Dolphin FreeFly Licenses AD-A to AD-D.
Through March 2007, a total of 410 FreeFlyers from 32 nations have achieved Atmosphere Dolphin FreeFly licences.