The Mars Society is requesting volunteers to participate as members of the crew of the Mars Desert Research Station in southern Utah and Flashline Mars Arctic Research Station on Devon Island during extended simulations of human Mars exploration operations during the period of October 2002 through August 2003. It is anticipated that the Desert Station field season will include a set of two-week rotations running from mid October 2002 through the end of April 2003. It is anticipated that the Flashline Station field season will run from late June through early August 2003.