King Arthur's Graham McTavish was recently added to the cast of John Rambo.

According to Variety, he will play a team leader hired to find three captured missionaries in Southeast Asia. Sylvester Stallone wrote, directed and produced the film. It is currently shooting in Thailand.

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The next chapter finds Rambo recruited by a group of Christian human rights missionaries to protect them against pirates, during a humanitarian aid deliver to the persecuted Karen people of Burma. After some of the missionaries are taken prisoner by sadistic Burmese soldiers, Rambo gets a second impossible job: to assemble a team of mercenaries to rescue the surviving relief workers.