The crew of the Flashline Mars Arctic Research Station (FMARS) for the 2004 field season has been announced. The international crew, which consists of four Americans, one French Canadian, one Pole and one Hungarian, will operate the FMARS in a single rotation which will run from July 7 to August 4, 2004. During that time they will attempt to conduct a sustained program of field research in geology, palaeontology, and microbiology in Devon Island’s polar desert, while operating under many of the same constraints as an actual Mars exploration mission. By doing so, they will gain valuable insights to help design effective field exploration tactics for Mars.