INSIGHT MISSION IMAGES Preparing MarCO April 19, 2018 Joel Steinkraus, MarCO lead mechanical engineer from JPL, makes an adjustment on the CubeSat prior to integration in a deployment box as seen inside the cleanroom lab at Cal Poly San Luis Obispo on Monday, March 12. Credits NASA/JPL-Caltech/Tyvak/Cal Poly SLO. ENLARGE