Watch Delta IV Heavy rocket launch US spy satellite on penultimate mission early Wednesday

United Launch Alliance's powerful Delta IV Heavy rocket is scheduled to fly for the second-to-last time early Wednesday morning (June 21), and you can watch the liftoff live.

Watch Delta IV Heavy rocket launch US spy satellite on penultimate mission early Wednesday
United Launch Alliance's powerful Delta IV Heavy rocket is scheduled to fly for the second-to-last time early Wednesday morning (June 21), and you can watch the liftoff live.