Click the arrow to watch the NASA Social briefing for the payloads aboard SpaceX CRS-10. Video source: NASA YouTube channel.
Click the arrow to watch the pre-launch briefing at Pad 39A before the SpaceX Falcon 9 horizontal on the pad. Video source: NASA YouTube channel.
Almost three years have passed since SpaceX in April 2014 signed a twenty-year lease for Kennedy Space Center's Pad 39A.
The first launch is scheduled for tomorrow.
SpaceX will launch its Falcon 9 booster with its cargo Dragon to deliver payloads to the International Space Station. Liftoff is scheduled for 10:01 AM EST.
As of this writing, the weather forecast is 70% favorable.
The only known issue being worked at this time is a small helium leak in the upper stage.