After Vulcan comes online, ULA plans to dramatically increase launch cadence - Ars Technica

1. After Vulcan comes online, ULA plans to dramatically increase launch cadence  Ars Technica
2. Inaugural Launch of ULA's Vulcan Rocket Pushed to May  Gizmodo
3. What to Expect From the ULA's Vulcan Centaur Launch  InsideHook
4. ULA targets May 4th for Vulcan Centaur rocket's inaugural flight  Engadget
5. BE-4 Engine Review Delays ULA Vulcan Debut  Aviation Week