Interaction of Zonal Winds With the Equatorial Midnight Pressure Bulge in the Earth's Thermosphere: Empirical Check of Momentum Balance (Paper 5L6553) F. A. Herrero, H. G. Mayr, N. W. Spencer, A. E. Hedin, and B. G. Fejer 491 In-Situ Measurements of Nitric Oxide in the High Latitude Upper Stratosphere (Paper 5L6575)