ULA's replacement for Atlas V and Delta IV. BE-4 methalox first stage (Blue Origin engines), Centaur V upper stage with two RL10 engines. Primary US Space Force national-security launcher under NSSL Phase 2 / Phase 3.
| Operator | ULA |
|---|---|
| Country | US |
| First flight | 2024 |
| Status | Active |
| Class | Medium-to-heavy lift expendable |
| Primary pads | SLC-41 Cape Canaveral |