The Mars Desert Research Station in Hanksville, south central Utah, has proved very productive. M.D.R.S. is the second Mars Society Analog Research Station, the Flashline Mars Arctic Research Station, F.M.A.R.S., on Devon Island in Canada’s arctic north being the first. While the latter is located in terrain more analogous to what we expect on Mars, its operable season is only six weeks long. The Utah location allows several months of operation. Because of those limitations, time is much more precious at the Arctic outpost, and talent and expertise requirements more exacting. It is now the practice to accept no application for a 2-week long crew rotation in the Arctic unless the applicant has already served a stint in Utah.