The Flakpanzer (shortened form of the German Flugabwehrkanonenpanzer or 'anti-aircraft cannon tank') Gepard (English: Cheetah) is an autonomous, all-weather-capable German self-propelled anti-aircraft gun (SPAAG). Though developed and fielded in the 1970s it has been modernized several times and is still a cornerstone of the air defence of the German Army (Deutsches Heer) and other states.