With Vulcan's certification, Space Force is no longer solely reliant on SpaceX
Briefly

The US Space Force has officially certified United Launch Alliance's Vulcan rocket for national security missions, marking a significant milestone after years of development delays and challenges. Brig. Gen. Panzenhagen emphasized the importance of assured access to space for national security. The certification process involved a rigorous checklist of 52 criteria and numerous tasks, including extensive audits and flight demonstrations. This approval allows ULA to operate alongside SpaceX, enhancing the nation's launch capabilities for critical space-based systems.
Assured access to space is a core function of the Space Force and a critical element of national security.
The certification process entailed 52 criteria, more than 180 tasks, and involved extensive hardware and software audits.
Read at Ars Technica
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