Spaceflight NowFive more Delta 4-Heavy flights in ULA backlog after final “single stick” launch – Spaceflight NowAug 22, 2019Stephen ClarkBy Stephen Clarkmore_vert
Space.comDelta IV Medium Rocket, the Last Of Its Kind, Launches GPS Satellite for US Air ForceAug 22, 2019Amy ThompsonBy Amy Thompsonmore_vert