A SpaceX Falcon 9 rocket, in a horizontal position, is readied for launch on a supply mission to the International Space Station on historic launch pad 39A at the Kennedy Space Center at Cape Canaveral, Florida, U.S., February 17, 2017. A SpaceX Falcon 9 rocket , is readied for launch on a supply mission to the International Space Station on historic launch pad 39A at the Kennedy Space Center in Cape Canaveral, Florida, U.S., February 17, 2017.