A newcomer joins the team as they prepare to rescue a hijacked plane that is filled with European businessmen.
While in Africa to recover a fallen Chinese satellite, the team capitallizes on an opportunity to capture a wanted terrorist.
Jonas attempts to rescue a group of American missionaries hiding out in the Philippines. Unexpectedly the mission takes a turn for the worst and becomes more difficult than planed when two missionaries refuse to leave.
When Mexican drug minister Alberto Salaza comes to Los Angeles The Unit is ordered to protect him. Sources lead The Unit to believe there will be an attempt to assassinate him on US soil. To complicate things further, Salazar's family is kidnapped, now The Unit has to protect him and save his family.
The mission in Spain proved to be successful, but the Spanish government disassociates themselves from The Unit, leaving them frantically trying to get out of the country safely.
Planting a bug in the Russian embassy in Israel seems to be a mission destined to fail when the Unit goes undercover as security detail for a Russian Ambassador to attempt this covert operation.
Jonas' Unit and Bravo team are sent on a mission to intercept the Taliban leader’s convoy but Bravo Team's helicopter goes down. Now, Jonas is left with the decision to continue the mission or abort and rescue Bravo Team.
An extremely intense training exercise for the Unit proves to be almost deadly for Bob who is sick when training begins. The Unit train at a base used to prepare soldiers for capture, here they will face the humiliation and torture that goes along with the territory.
Negotiations for the purchase of military weapons break down and Jonas and his team must find and destroy the shipment.
Jonas is warned to cancel a scheduled visit by a high ranking official as a result of Bob's cover being blown while training soldiers in Africa. Things become difficult when Jonas discovers that the visit is just a cover. Meanwhile, Kim has an unexpected visitor while working at the radio station and a real estate investment catches Molly's attention.
The confidentiality of the team is threatened when the son of a former Unit Member returns to base for a reunion. Jonas and Col. Tom Ryan discover that the former member's son, Keith Soto, is a reporter doing a story that could jeopardize the Unit's concealment.
The Unit is called in as advisors to assist the Bomb Squad when a bomb is planted in an Atlanta bank. Suspecting the bomb may be nuclear, the Team is forced to take over operations. Later, they turn control back over to the bomb squad under specific instructions that unfortunately are ignored. Meanwhile, Kim and Bob take a vacation but unbeknownst to Kim she's being taken on a mission, putting her at risk.
Managing to avoid several obstacles, the Unit captures a former Yugoslavian general wanted for war crimes and lets the U.N. take credit. When the General escapes U.N. custody, the Unit has no knowledge of the escape and become unsuspecting targets when he vows revenge. Meanwhile, Kim learns some disturbing news and things become unbalanced at home when Tiffy suspects Mack re-upped with the Unit.