SpaceX to retry launch in first U.S. national security space mission
A successful launch - SpaceX's fourth attempt in a week after technical and weather delays - would be a significant victory for Musk's rocket company.
The SpaceX Falcon 9 rocket, scheduled to launch a U.S. Air Force navigation satellite, sits on Launch Complex 40 after the launch was postponed after an abort procedure was triggered by the onboard flight computer, at Cape Canaveral, Florida, U.S.(photo credit: REUTERS/STEVE NESIUS)
