Jason August, International Space Station Mission Evaluation Room manager, talks to NASA Social participants about the International Docking Adapter-3 payload during a What’s On Board science briefing at the agency’s Kennedy Space Center in Florida on July 23, 2019. The briefing was held for SpaceX’s 18th Commercial Resupply Services (CRS-18) mission to the station. The SpaceX Falcon 9 rocket and uncrewed Dragon spacecraft are scheduled to launch July 24, 2019, from Space Launch Complex 40 at Florida’s Cape Canaveral Air Force Station.