The hot button topic of racial conflict between Black citizens and police officers is a major theme in the Season 4 premiere "3 Seventeen Year Olds," the first of two episodes airing back-to-back. As Hondo (Shemar Moore) confronts that tense history, the SWAT team also pursues El Diablo's scattered drug cartel hiding in the city, while a Jihadist group detonates bombs in a series of coordinated attacks. Then, in "Stakeout," the team helps the CIA confirm whether an international crime lord has resurfaced in Los Angeles.