By 2014, Slattery held the rank of commander in the United States Navy and is the executive officer of the Arleigh Burke-class guided missile destroyer USS Nathan James (DDG-151).

During the ship's mission to the Arctic, she began dating and fell in love with LT Danny Green (Travis Van Winkle), the leader of the Naval Mountain Warfare Unit deployed on the James.

In addition to being a new wife and mother, Kara has left active duty and works for Captain Chandler and the Michener Administration as a Deputy Chief of Staff for military (specifically naval) matters.

[9] In the season four finale, Kara plays a crucial role in the defeat of Vellek, using the Nathan James Close-In Weapons System to gun down the HS Triton's bridge crew, commanding officer and defending gunners, giving a boarding party a chance to take the ship.

As the series progresses, she is given more responsibility and trust by the senior staff, culminating in a temporary appointment as executive officer of the Nathan James while CDR Garnett (Fay Masterson) is MIA.

Her mother, Amy Granderson (Alfre Woodard), is the vice-chair of the President's Defense Policy Board at the time of the Red Flu outbreak, and is believed to be the highest-ranking member of the White House to survive the immediate pandemic.

After her genocide in Baltimore is stopped by CDR Chandler and the Nathan James retaken from her rogue Avocet Troopers, Amy committed suicide rather than surrender, leaving Alisha devastated.

He locates the place they are staying and finds out that his wife is killed by looters but his daughter, Kathleen (Jade Chynoweth) survived and is heading for where the Nathan James is spreading the cure.

He escaped from Price's custody, and he and Kathleen eventually made their way to Kara Green and Jacob Scott, and helped them extract President Oliver (John Cothran) from the Chief of Staff, Allison Shaw (Elisabeth Röhm), and the other regional leaders who wanted him to dissolve the country.

[15] Now with President Oliver, Kara, and Kathleen, Tex is declared a fugitive by Shaw and the leaders as they make their way to San Diego to rendezvous with the Nathan James, which is coming back from Asia.

[16] After CAPT Chandler's children are kidnapped by Shaw, Tex went in as backup for the hostage swap and subsequently killed her guards; however, he lost his own life in the process, leaving behind a grief-stricken daughter.

In Season 5, Garnett is promoted to the rank of Captain and given command of the multipurpose amphibious assault ship USS Jeffrey Michener (LHD-81), the fleet flagship for Admiral Slattery.

[21] After being freed from the Ramseys' brainwashing, Michener became a staunch ally and supporter of the Nathan James and its crew, helping the American public gain back the trust the ship needed in order to spread the cure.

After the defeat of the Immunes and the successful creation of the "contagious cure" by Dr. Rachel Scott, Michener is sworn in as President of the United States by a surviving judge in St. Louis.

One of Michener's first official acts as president is to issue pardons to the Immunes who got swept up in the Ramsey brothers' campaign, as well as to Dr. Scott, who intentionally killed Niels Sørensen in order to create the contagious cure; he also promoted CDR Chandler to Chief of Naval Operations while the Nathan James is in drydock.

[3] In the episode "In the Dark," reporter Jacob Barnes reveals to the public that President Michener flew his infected son to his safe zone in Florida against protocols that resulted in an outbreak there.

[24] Initially held up in a Costco, his effective leadership as Mayor during the Red Flu pandemic resulted in the St. Louis area having one of the lowest casualty rates in the country, and he became revered for inspiring hope in the people.

He is later held hostage in the White House by Allison Shaw and members of the United States Secret Service loyal to her, forced to be a puppet for her and the regional leaders under threat of his family being executed.

After losing control of the States and her window to destroy Nathan James closed, Shaw played her final card in order to draw out Tom Chandler by kidnapping his two children.

In S02E05, Ramsey tells Niels Sørensen that he is submarine's coxswain, a position that is usually held by a senior chief petty officer, prior to the pandemic killing the rest of the crew.

She is tricked to working with the Immunes by Sean Ramsey, allowing them exclusive use of the network to broadcast doctored video footage to survivors in the United States to turn their trust away from the crew of the USS Nathan James.

Doc Rios determines that, due to the anti-cure in their systems, both Takehaya and Kyoko are terminally ill with the Red Flu and, ultimately, they can't be saved.

He is later captured and arrested by Captain Chandler and the crew of the USS Nathan James at Naval Base San Diego, with the US soldiers under his command reaffirming their allegiance to President Howard Oliver.

The area of St. Louis, Missouri (where the new White House is located) is technically under his jurisdiction, but Allison Shaw later conspires with Roberta Price to convince him to hand it over to her, so it can become an independent federal district under her control.

He assists Allison Shaw in activating the United States centralised weapons system, wanting to be the one to destroy the USS Nathan James and kill Tom Chandler.

He boards the USS Nathan James under the guise of a Middle Eastern refugee, and informs Fletcher that the UK government has deal with Paul Vellek, and they are to steal the seeds from the Americans.

He controls a large army of fighters, in addition to remnants of the Hellenic Navy, including Hydra class frigate HS Triton, where his laboratory is located.

He frequently hallucinates and speaks to his youngest son, Christos, who is killed in a violent mugging years prior, drinking diluted Nostros tea to maintain the illusions.

This results in Vellek spiking him with a concentrated version of the Nostros weed, rendering him docile and unable to fight, with his rank and power being transferred to Commander Stavros Deomides.

Gustavo Barros, commonly known by his nickname Tavo, is the leader of the newly reconstituted Gran Colombian Empire, a superstate that controls multiple nations in South America.