A motion picture extra is a person who is hired to appear as part of the background of a film — for example, as one of a crowd. These people generally do not have speaking roles, and are seldom given screen credit. In return for a per diem payment, an extra must follow the same directions for as many takes as are necessary for a particular scene, until the film director is satisfied. As with the first two installments of the Back to the Future trilogy, there were hundreds of extras hired for Back to the Future Part III. Besides the many residents of Hill Valley in 1885, there were American Indians who pursued Marty, followed by the U.S. Cavalry, and a few persons whom Marty encountered on his return to 1985.