G.I. JOE SIGMA 6 SNAKE EYES with Night-Ops Gear SIGMA 6 is the code name for a new group of covert GI JOE operatives with highly specialized capabilities. They use innovative technology and gear designed exclusively for each of their missions. Working against them is the evil COBRA organization, whose goal it is to take control of the world by sabotage, espionage and outright destruction. SIGMA 6 fights them at every turn and provides a swift solution to critical situati