Damocles

My Orion nuclear pulse vehicle in Earth orbit.

I understand that in the 1960s the idea was that spacecraft of this type, armed with nuclear weapons, would sit atop Saturn boosters in hardened silos across the US, ready to be launched into orbit if the Soviets started escalating towards a first strike.  
I didn't have a lot of reference images to start with and took quite a few liberties with the design, particularly with the number and proportions of the pulse unit magazines and payload canisters. Next time I'll either make a more accurate version, or let my imagination run wild.

The background's a NASA photo.