Gōgō Sentai Boukenger (Boisterous Squadron Boukenger ) is the thirtieth program in the Super Sentai franchise, airing from 2006 to 2007. SGS ("Search Guard Successor") is a private philanthropic organisation dedicated to the preservation of historical artifacts and treasures. The most dangerous of these relics, possessing powers beyond that of modern human technology, are designated as "Precious".