Watch a replay of Monday’s Falcon 9 launch as seen from the Kennedy Space Center press site, a viewpoint around three miles from pad 39A.

SpaceX’s Dragon supply ship executed a laser-guided rendezvous with the International Space Station early Sunday, delivering an experimental expandable enclosure for attachment to the complex later this month for tests to verify the inflatable design’s suitability for future space habitats.

The launch of a United Launch Alliance Delta 4-Heavy rocket from Cape Canaveral was aborted three seconds before a planned liftoff at 3:28 a.m. EDT (0728 GMT). The rocket was set to loft a classified payload for the National Reconnaissance Office, the U.S. government’s spy satellite agency.