In this 1977 image provided by 20th Century-Fox Film Corporation, from left, Harrison Ford, Carrie Fisher, and Mark Hamill are shown in a scene from "Star Wars" movie released by 20th Century-Fox. From the set of “Star Wars: Episode VII” in Abu Dhabi, director J.J. Abrams announced the launch of Star Wars: Force for Change, a campaign to raise funds for United Nations Children’s Fund’s (UNICEF). The campaign will run from 12:01 a.m. PDT on May 21, 2014, until 11:59 p.m. PDT on July 18. (AP Photo/20th Century-Fox Film Corporation)