Apollo 8 contained a novel set of mechanical and electrical interfaces (CSM, LTA-B lunar module dummy, launch adapter, and Saturn V vehicle), Low observed. Furthermore, concern about these complex interfaces had increased because one of the adapter panels on Apollo 7 had not opened properly. What Low - as well as MSC Director Robert R. Gilruth - desired foremost was to preclude repetition of another situation such as had occurred during the Gemini IX mission, when the shroud panels covering the Agena target vehicle had only partially deployed and had produced the "angry alligator" that forced cancellation of docking plans on that earlier flight.