The Last Ship (2014)

S1E5 El Toro

As Rachel nears a significant breakthrough with her vaccine, she, Chandler, and XO Slattery venture into the Nicaraguan jungles to gather monkeys for her trials. However, they encounter far more than expected when they cross paths with a former drug lord determined to keep his grip on the downtrodden community. Chandler and his team face a profound ethical dilemma: should they eliminate this threat or just take what they need for their mission and move forward?