Posted: Sat, Jun 24, 2023, 10:50 AM ET (1450 GMT)
![Delta 4 Heavy launch of NROL-68 (ULA)](/images/d4h-nrol68.jpg)
A Delta 4 Heavy lifted off early Thursday carrying a classified satellite. The rocket lifted off at 5:18 am EDT (0918 GMT) from Cape Canaveral Space Force Station in Florida after a one-day delay because of a ground system problem. The rocket is carrying a payload for the National Reconnaissance Office on a mission designated NROL-68. ULA and the Space Force declared the launch a success several hours later. One final Delta 4 Heavy launch is scheduled for next year.