> Silos are immobile. But mobile launchers aren't. Russia and China use those, but we don't. > presumably obsoleting strategic bombers We'd have to have hun

> Silos are immobile. But mobile launchers aren't. Russia and China use those, but we don't. > presumably obsoleting strategic bombers We'd have to have hundreds of warheads in orbit at all times to obsolete strategic bombers. If the x-37b is to be used for carrying (or deploying) orbital nukes, then at least for now it has to be a very few nukes. Re-entry vehicles are visible because they glow white hot as they re-enter, so while surprising (because there is no boost phase to detect, and because the detectable flight time will be less than half that of an ICBM) they will not provide enough plausible deniability to be worth using at all. This is why I doubt the x-37b is being used to carry nukes.