Live coverage: Delta 4-Heavy countdown begins at Cape Canaveral - Spaceflight Now

Live coverage of the countdown and launch of a Delta 4-Heavy rocket with the classified NROL-44 payload for the National Reconnaissance Office. Text updates will appear automatically below. Follow us on Twitter.

United Launch Alliance’s live launch broadcast begins at 7:45 p.m. EST Thursday, Dec. 10 (0045 GMT Friday, Dec. 11).

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