Cape Canaveral (US): SpaceX has launched a top-secret spy satellite for the US government. The unmanned Falcon 9 rocket lifted off on Monday morning from its NASA-leased pad at Kennedy Space Center in Florida. It hoisted a classified satellite for the National Reconnaissance Office. Several minutes into the flight, the first stage booster, its job done, aimed for a touchdown at Cape Canaveral Air Force Station. SpaceX strives to return most of its first- stage boosters for reuse. This was the fourth SpaceX booster landing at Cape Canaveral; even more have landed on an ocean platform.