WASHINGTON :
The blastoff of the Delta IV Heavy launch vehicle with US spy satellite NROL-44 at Cape Canaveral in Florida has been delayed, US spacecraft launch service provider United Launch Alliance (ULA) said on Twitter today (Thursday).
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“The Terminal Countdown Sequencer Rack (TCSR) called a hold at T-minus 7 seconds. TCSR controls the final 10 seconds of the #DeltaIVHeavy countdown. The safety system worked as intended to stop the countdown if a problem is detected,” ULA said.
