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VANDENBERG AIR FORCE BASE, Calif. – In the mobile service tower on Space Launch Complex 2, the first half of the fairing (at right) is being moved toward the Ocean Surface Topography Mission, or OSTM/Jason 2, spacecraft for encapsulation. The fairing is a molded structure that fits flush with the outside surface of the Delta II upper stage booster and forms an aerodynamically smooth nose cone, protecting the spacecraft during launch and ascent. The launch of the OSTM/Jason-2 is scheduled for June 20 from Vandenberg Air Force Base. The launch window extends from 12:46 a.m. to 12:55 a.m. PDT. The satellite will be placed in an 830-mile-high orbit at an inclination of 66 degrees after separating from the Delta II 55 minutes after liftoff. The five primary science instruments of the Ocean Surface Topography Mission aboard the Jason 2 spacecraft are dedicated to measuring the height of the ocean surface. These measurements will be used to evaluate and forecast climate changes and improve weather forecasting. The results also are expected to help forecasters better predict hurricane intensity.