Marie Lewis, NASA Communications moderator, moderates the prelaunch news conference for SpaceX’s 18th Commercial Resupply Services (CRS-18) mission to the International Space Station, July 24, 2019, at the agency’s Kennedy Space Center in Florida. 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.