ULA back to try Vulcan launch again awaiting chance to help Amazon play catchup to SpaceXTechNov 15 at 3:20 AM – Nov 15 at 12:42 PM3 outletsBloombergULA Vulcan Rocket Launches With Its First Amazon Leo Payload Nov 15 at 12:42 PMOrlando SentinelULA back to try Vulcan launch again awaiting chance to help Amazon play catchup to SpaceX Nov 15 at 3:20 AMSpace.comUnited Launch Alliance's Vulcan Centaur seen Nov 15 at 11:40 AM