> Also note that Vulcan and New Glenn both use Blue Origin's BE-4 engine. One of those engines destined for Vulcan's maiden flight exploded during qualificatio

> Also note that Vulcan and New Glenn both use Blue Origin's BE-4 engine. One of those engines destined for Vulcan's maiden flight exploded during qualification testing recently. I think a lot will have to go right going forward for Amazon to reach the July 2026 deadline for half deployment.