When control of a university chemistry lab is seized, the team races to thwart a devastating terror attack.
When a home invasion turns deadly, the team embarks on a race to track down priceless antique artifacts before any more lives are lost; Leroy enlists Hondo's help after an overdose hits close to home.
When the team discovers an illegal weapons dealer has sold stock to someone targeting a high-level politician, they rush to stop a deadly ambush.
When a plane carrying Street and the dangerous prisoner he's transporting is hijacked, the team races to save the innocent passengers onboard -- and one of their own; Hondo takes a big step in his relationship with Nichelle.
When Hicks witnesses the assassination of his longtime friend, the team races to find the shooter and determine why he was targeted; Luca struggles with how to help his brother after he's arrested.
When a series of deadly explosions hits oil derricks across Los Angeles, the team must hunt down an activist-turned-terrorist; Deacon and his wife work to free a reformed drug dealer who they believe was sent away for a murder he didn't commit.
When bodycam footage left at a local news station seems to show Hondo shooting two police officers, he is forced to go on the run while the team works to clear his name.
When hospital employees are targeted by a gunman, the SWAT team races to find a grieving father whose son was denied a kidney transplant; Hondo searches for evidence behind an alarming rise in Los Angeles stash houses.
When the team busts a group of dangerous robbery suspects; Tan is confronted with a pivotal figure from his past; Luca is tapped to temporarily stand in for Hicks.
A terminally ill inmate escapes from a hospital determined to settle old scores before he dies; Nichelle faces a life-changing event that affects her relationship with Hondo.
After an armed robbery crew invades a downtown auction house, the case quickly turns personal for Hondo when his sister, Winnie (April Parker Jones), is taken as one of the hostages.
Hondo and the team race to locate the hacker responsible for accessing LAPD's computers and revealing the identities of undercover officers; Street is forced to reckon with past misdeeds.
The SWAT team partners with the DEA to locate stolen rocket launchers smuggled into Los Angeles, high-power weapons with new technology capable of cutting through armored tanks. Also, a personal issue for Tan arises when a colleague is hurt in the field; Hondo's inquiry into the arrest of a homeless veteran for Leroy, Darryl's father, sparks an idea for a new policing initiative; and Luca suspects the mother of his mentee, Kelly, wants to date him.
When Deacon enlists Chris’ help on an off-duty private security detail, they struggle to survive when they’re attacked by a drug cartel looking to kidnap their wealthy VIP client, on the new day and time.
When an undocumented woman is violently abducted, the team forms an unlikely alliance to try and bring her home alive.
Hondo returns as leader; the team is pulled into a dangerous case involving a large stockpile of cash and the Russian mob; Daniel Sr. opens up to Hondo about a painful time in his past.
When armed gunmen storm the set of a controversial cable news show that promotes conspiracy theories, the team races to prevent a hostage situation from escalating on live TV. Also, Chris supports Street as he prepares for his mother’s funeral.
When the team responds to a home invasion call, they uncover a murderous plot against a famous pro football quarterback; Hicks gets a long-awaited lead on a Jane Doe case he worked 20 years ago.
As the team races to stop a violent band of armed robbers, the search is complicated by civilians using a public safety app that encounters vigilantism; Street receives difficult news that alters his future.
When a robbery crew holds up the iconic downtown Los Angeles library, the team discovers that stolen architectural drawings could lead to a major threat against the city. Also, the squad is surprised by the arrival of a new leader, longtime LAPD veteran and former S.W.A.T. member Rodrigo Sanchez.
Still in Mexico, Hondo teams up with a local cop for a dangerous rescue mission, only to find himself with a target on his back. Also, back in Los Angeles, Hicks considers disbanding the team for good.
In the aftermath of his decision to speak out in the press, Hondo retreats to a quiet town in Mexico to reassess his life and professional future, only to find himself reluctantly drawn into one local family's fight for justice.
