WATCH LIVE: ULA to Launch Delta IV Heavy Rocket #SpySatellite(NROL-71 @08:44pm EST

A United Launch Alliance Delta 4-Heavy rocket will launch a classified spy satellite cargo for the U.S. National Reconnaissance Office. The largest of the Delta 4 family, the Heavy version features three Common Booster Cores mounted together to form a triple-body rocket. Liftoff window begins at 08:44pm EST ▰ Get Live Alerts: (Rocket Launches & Webcasts) ▰ Upcoming launch events: Mission Information: United Launch Alliance will use the Delta IV Heavy rocket