This certification is about launching unmanned US military payloads, not about manned spaceflight. As far as I know there's no technical reason Ariane 5 couldn't be used for them right now. I don't know why they're not being used, but if the decision to look for a new launch provider happened in the past couple of years then I don't see why you'd go for Arianespace over SpaceX.
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This certification is about launching unmanned US military payloads, not about manned spaceflight. As far as I know there's no technical reason Ariane 5 couldn't be used for them right now. I don't know why they're not being used, but if the decision to look for a new launch provider happened in the past couple of years then I don't see why you'd go for Arianespace over SpaceX.