Sigma Force is a fictional team of elite operatives featured in the novels of author James Rollins. They are a part of a secretive organization that combines scientific research with military expertise to tackle global threats. Each member possesses unique skills, ranging from advanced technology to combat training, allowing them to solve complex problems and confront dangerous adversaries. The team's adventures often involve historical mysteries, cutting-edge science, and thrilling action. They frequently collaborate with scientists and historians to uncover ancient artifacts or prevent catastrophic events, blending elements of thriller and science fiction genres in their quests.