Blue Origin’s BE-4 engines power the first stage of United Launch Alliance's Vulcan rocket. Credit: ULA

Two missions—USSF-106 and USSF-87—are currently waiting in the wings, with payloads ready but no confirmed launch dates

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Sandra Erwin writes about military space programs, policy, technology and the industry that supports this sector. She has covered the military, the Pentagon, Congress and the defense industry for nearly two decades as editor of NDIA’s National Defense...