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Live coverage: Delta 4 countdown and launch journal

March 17, 2017 Justin Ray

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Live coverage of the United Launch Alliance Delta 4 rocket flight with the Wideband Global SATCOM 9 satellite. Text updates will appear automatically below; there is no need to reload the page. Follow us on Twitter.

(Launch webcast begins at 7:24 p.m. EDT (2324 GMT)

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