Plug for a friend of mine
Dark Skies By Barry P Connors
It was supposed to change the world. A technology far beyond anything mankind had developed before. A way to change things, to make them better. But when a war threatens to destroy our way of life, and the Apocalypse looms on the distant horizon, it becomes something more. A chance to survive. To live on. It’s called Gravity...and it’s our only hope.
It's worth the read.