Live coverage of the launch of NASA’s Orbiting Carbon Observatory-2 (OCO-2) mission is underway from Vandenberg Air Force Base in California, where preparations for the liftoff of ULA’s Delta II rocket carrying OCO-2 to space are happening. Launch is targeted for the opening of a 30-second window at 5:56:23 a.m. EDT (2:56:23 a.m. PDT) from Space Launch Complex 2. There is a 100 percent chance of favorable weather for launch with no range safety launch commit criteria violations predicted. Visibility is forecast to be 1-2 miles with fog and a northerly wind of 4-7 knots. Based on the weather forecast and no technical issues, NASA Launch Manager Tim Dunn has given a “go” to load liquid oxygen into the Delta II rocket first stage at Space Launch Complex 2. The launch team has completed troubleshooting a water suppression system issue that resulted in the scrub of a launch attempt Tuesday. A valve that is part of the launch pad pulse suppression water system, which had operated properly...