 The third row consisted of ODIN, depending on phase of flight, either ACO (shuttle docked) or the CIO (Free-flight Operations) and OpsPlan.The fourth row consisted of CATO, FLIGHT—the flight director, and CAPCOM.The fifth last row consisted of GC, depending on the phase of flight; either RIO, EVA, VVO, or FDO (reboosts only), and SURGEON.