In the Kennedy Space Center’s Press Site auditorium, Kirk Shireman, manager of the International Space Station Program, left, and Jessica Jensen, director of Dragon Mission Management for SpaceX, speak to members of the media during a prelaunch news conference for the SpaceX CRS-15 Commercial Resupply Services mission to the International Space Station. A SpaceX Dragon spacecraft is scheduled to be launched from Space Launch Complex 40 at Cape Canaveral Air Force Station. The SpaceX Falcon 9 rocket will lift off on the company's 15th Commercial Resupply Services mission to the space station.