In the Press Site auditorium of NASA's Kennedy Space Center in Florida, Elon Musk, SpaceX chief executive officer and lead designer, left, and Hans Koenigsmann, SpaceX vice president of Mission Assurance, speak to the media at a post-launch news conference following the liftoff of SpaceX CRS-8, a commercial resupply services mission to the International Space Station, or ISS. SpaceX CRS-8 lifted off atop a Falcon 9 rocket from Space Launch Complex 40 at Cape Canaveral Air Force Station at 4:43 p.m. EDT.