A streak of cloud, shaped something like French bread, appeared in the sky over the Operations Support Facility (OSF). A cloud shaped like this is called Kelvin-Helmholts Cloud,Eproduced by instability in the atmosphere where two layers of air (upper and lower) have different densities. It is believed that the swirls in van Gophs masterpiece The Starry NightEare clouds of this type [texts provided by Masato Ishiguro] .