CNO Tom Chandler is sent to Asia to investigate a possible mutation of the Red Flu. Captain Slattery and his crew deliver cure to Southeast Asia but there may be an unexpected threat in the region.
Chandler investigates a mutation in Asia in the season premiere.
Chandler must find a way to return to his old crew.
Slattery unravels the truth about his predicament.
Pressure mounts on President Michener (MARK MOSES).
Chandler's mission becomes increasingly complicated.
Chandler prepares the final part of his plan.
The Nathan James must evade an overwhelming threat.
America copes with tragedy; Chandler faces a virus change.
Kara does some digging in the White House.
Chandler wrestles with a strange order from the White House.
Chandler faces a powerful enemy in a final showdown.
Chandler returns to the US to discover the truth.
The fight for America comes to an end in the season finale.