Good morning from a cloudy Florida where SpaceX is preparing to launch its third operational mission to the International Space Station. The Falcon 9 rocket and Dragon spacecraft loaded with cargo have been rolled to the launch pad at Launch Complex 40 at Cape Canaveral Air Force Station and raised to its vertical launch position. Today’s launch time is 3:25 p.m. EDT with an instantaneous launch window to allow a link up with the International Space Station. The weather forecast still offers a 40 percent chance of acceptable conditions at launch time and meteorologists will spend the day surveying the skies for signs of thick clouds or other launch rule violations. NASA’s continuous coverage will begin on the Launch Blog and NASA TV at 2:15 p.m. In the meantime, we will report breaking news here as events warrant.