MEPAG is NASA's community-based forum designed to provide science input for planning and prioritizing Mars exploration activities for the next several decades. It is chartered by NASA's Lead Scientist for Mars Exploration at NASA HQ, and reports its findings at FACA-sanctioned meetings of the Solar System Exploration Sub-Committee of the NASA Space Science Advisory Committee. Open to all interested Mars scientists, MEPAG regularly evaluates Mars exploration goals, objectives, investigations and required measurements on the basis of the widest possible community outreach. NASA's JPL has been directed to manage the logistics associated with the operations of MEPAG on behalf of NASA's Space Science Enterprise.