Watch conditions at Kennedy Space Center during Tropical Storm Isaias

SpaceX’s ground team hydraulically hoisted a 213-foot-tall Falcon 9 rocket vertical at pad 39A at NASA’s Kennedy Space Center before dawn Monday ahead of a planned liftoff with a space station-bound robotic resupply craft.

Working overnight on Florida’s Space Coast, SpaceX technicians transferred a two-stage Falcon 9 rocket from the company’s commercial hangar a quarter-mile up the ramp to launch pad 39A early Saturday, positioning the kerosene-fueled booster for liftoff Sunday with a classified payload for the U.S. government’s National Reconnaissance Office.

The planned launch of a SpaceX Falcon 9 rocket Tuesday from Cape Canaveral of a South Korean military communications satellite has been delayed in order to address an issue on the launcher’s second stage, and potentially replace the hardware if necessary, officials said Monday.