Measure 15 samples in the dark and 5 samples in light Measure 15 samples in the dark and 5 samples in light. The Viking Lander did not move, but it used an SSRA with a boom, collector head, and shroud unit, capable of collecting a variety of material elements. Each sampling site separated by 500 m. The Viking Lander did not have this capability. Determine composition, geotechnical properties, and volatile content of regolith. The Viking Lander used an X-ray Fluorescent Spectrometer (XRFS) to perform a chemical analysis. Enhanced geological characterization (multispectral imager & remote sensing instrument). The XRFS plus a remote sensing instrument may be used for this function.