VIDEO: First NTSB briefing on Virgin Galactic accident

United Launch Alliance teams ran through an 11-hour countdown Friday at Cape Canaveral to rehearse procedures before the first flight of a modified Atlas 5 rocket with Boeing’s Starliner crew capsule Dec. 20.

SpaceX launched a Falcon 9 rocket Wednesday at 9:06 a.m. EST (1406 GMT) from Cape Canaveral with 60 satellites for the company’s Starlink Internet network. Previous attempts to launch the mission were stymied by strong upper level winds and rough seas in the Falcon 9’s downrange recovery area northeast of Cape Canaveral.

SpaceX launched the next group of satellites for the company’s Starlink broadband network Wednesday at 9:25 p.m. EDT (0125 GMT Thursday) from pad 40 at Cape Canaveral Air Force Station. The satellites rode into orbit on a Falcon 9 rocket with a first stage flown on four previous missions, and the booster made a successful fifth landing on a SpaceX drone ship in the Atlantic Ocean.