Vernian Space Gun

For over 225 years, the United States Army has fought every enemy of the nation from around the globe, but now there's a threat never before seen and it comes in the form of a transmission from a nearby star. The transmission shows a war, a war on a scale never seen by man. And that war is on Humanity's very doorstep. Major Daniels knows that Earth isn't ready for that kind of war. In an era of fighter jets and smart-phones, we don't have the technology or infrastructure to begin to fight aliens with the power to travel the stars. But that's the impossible mission set before him and his team. The United States will need defenses, ships, stations, bases, and weapons capable of fighting that enemy. The first hurdle: finding a way to stage supplies and materials in orbit for the massive surge in space infrastructure. It would require every scrap of lift capacity in the entire world five times over and Major Daniels has to find out how to do it fast. His solution is simple: build the world's biggest gun and start firing payloads into orbit. The execution is what's wrought with peril. Because even if bureaucratic infighting and simple physics aren't enough to stop his project, then real enemies here on Earth might well be. Daniels has to figure out the problems with his Vernian Space Gun and keep an eye on his back, because some nations on Earth see the alien threat as an opportunity to settle old grudges and they don't care about what might happen to all of Mankind in the process.