Strikeforce was a U.S.-based mixed martial arts and kickboxing organization based in San Jose, California which operated from 1985 to 2013. It was headed by CEO Scott Coker. Its live events and competitions have been shown on CBS (debut on November 7, 2009) and Showtime in the United States, Super Channel in Canada, Primetime in the United Kingdom, SKY PerfecTV! in Japan, HBO Plus in Brazil, Space in Latin America and the Caribbean, and on the American Forces Network.