The FGR-17 Viper was an American one man disposable antitank rocket which had slated in the 1980s to be the replacement for the M72 LAW, but was canceled shortly after production began due to a major public scandal resulting from massive cost overruns and safety concerns, as well as a mistaken belief by the U.S. Congress and the American public that the term light antitank weapon meant a weapon that could defeat any hostile armored vehicle threat from any firing angle (including frontal shots against the Soviet Union's new T-64 and T-72 main battle tanks).