Jessica Jensen, director of Dragon mission management at SpaceX, speaks during the prelaunch news conference for the company's 18th Commercial Resupply Services (CRS-18) mission to the International Space Station, July 24, 2019, at NASA’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.