The RPF stands for Rehabilition Project Force. This is a program designed for Sea Org members who need specific areas of their lives handled so they can work and live to their fullest. It is a strenuous program and people often speak down upon it when they are unable to finish it or have family members who are in it and complain. However it gets fantastic results and the people who complete the program (which consists mainly of a lot of hard work, running, lots of studying, and scientology auditing) continue on with life feeling very good about themselves and are able to live life to it's fullest.