Shemar Moore's S.W.A.T. spinoff has found its main cast after previously receiving backlash for not including all the OG stars - but who has joined the show and who do they play? S.W.A.T., which premiered on CBS in 2017, followed a police Special Weapons and Tactics (SWAT) team named Twenty Squad that operated in Los Angeles. The procedural faced its fair share of battles to remain on the air when CBS picked S.W.A.T. up for a seventh and final season. The network ultimately reversed that decision and S.W.A.T. returned for season 8.