Delta IV Heavy retires after decades of service with secret mission

[Collection]The rocket, managed by United Launch Alliance (ULA), lifted off from Cape Canaveral Space Force Station in Florida at approximately 1pm EDT (1700 GMT). This launch comes after a 12-day delay due to a technical issue encountered during a previous attempt. Standing at approximately 23 stories tall, the Delta IV Heavy ascended into the sky amidst partly cloudy conditions, as seen in a live webcast by ULA.