As Jonas works with a British agent, he realizes that the agent may also have connections to the scientist they are tracking. Back home, Kim tries to help a desperate woman who has called in to her radio show.

Bob's moral conflict over the team's deadly tasks distracts him during a sniper mission, putting the whole team at risk.

Jonas and Bob watch from the outside as Grey gathers information on gang members he knows from his past who are stealing weapons and deadly explosives that could wind up in the wrong hands.

Jonas seeks revenge for the murder of his fallen colleague, Brown deals with a rescued journalist to be sure he doesn't betray them, and the team copes with William's death.

Jonas and Williams perform emergency battlefield surgery on Grey in an effort to keep him alive after he is critically injured during a mission...then must endure the teams's most devastating loss.

Jonas, Mack and Grey have their hands full keeping a pop diva safe from harm while Bob and a Justice Department escort face extreme danger as they return a prisoner to his own country to face his execution.

As the team works to recover a chip with invaluable information that could prevent a possible terrorist attack, a pregnant Kim is sent to bed rest and Bob proves inept at childcare.

Bob, Williams, and Grey are charged with rescuing a group of Embassy personnel and their families who under attack in Abidjan; while Jonas tests his daughter's strength and conviction when she decides to enlist.

The reunited team races to stop a plane armed with a deadly nerve gas aimed at Ft. Griffith; and Kim is ordered to broadcast a fake weather report from her radio station to get all personnel to take cover.

Jonas needs to uncover the conspiracy that has torn the team apart to bring them back together and clear Col. Tom Ryan's name; while Kim keeps the other wives safe from CIA scrutiny.

The team is in shambles as Jonas runs from a deadly assassin; Bob may be secretly reporting to another agency; and Ryan tries to put them back together. Part one of the two part season premiere.