Live coverage of the countdown and launch of a United Launch Alliance Delta 4 rocket with the U.S. Air Force’s tenth Wideband Global SATCOM communications satellite. Text updates will appear automatically below. Follow us on Twitter.
ULA’s live video coverage of the Delta 4 launch will begin March 15 at 6:30 p.m. EDT (2230 GMT). We will have live updates available on this page beginning at 2 p.m. EDT (1800 GMT).