A chain gang is a group of people who have been chained together physically and forced into an association with one another because of their indebtedness to a superior authority. Their association is not by choice; they are compelled to associate, and to obey every order given to them by the superior authority. Their options are either to die at the hands of the authority, or to surrender to the authority. Chain gangs have no freedom of choice. They cannot independently decide to move in a direction other than the direction in which the entire gang is moving. And nor can they influence the gang to move in a specific direction of their choice.
When a chain gang has served and fulfilled its purposes, the entire gang is usually destroyed because communication between gangs is strictly prohibited. Often, each gang is treated differently and subject to different privileges from other gangs. That separation is never broken.
A chain gang can never exist either in heaven or in God's millennial kingdom on earth because it is anathema to the freedom enjoyed by God's people. No one can ever be compelled by God or by any of God's people to do something that they would prefer not to do. Freedom of choice is a hallmark of God's version of discipleship and anything to the contrary is a dangerous aberration.
The use of chain gangs are Satan's principal method of operation. He divides his forces of evil into different work categories, depending on the nature of the evil they are required to accomplish. When their work has ended, the human forces of evil are destroyed because none are ever permitted to live beyond their time of useful work. His purpose for recruiting humans is to use them to accomplish what demons cannot accomplish, then destroy them and populate the earth with demons.