Calibrating the Iron Coffins
A Military Science Fiction Novel

About this book:

Chief Petty Officer Jesse Varner has twelve hours to certify forty-eight insertion pods before the Third Battalion drops into Tartarus Prime's screaming atmosphere. The fleet's spreadsheets say each M-44 "Iron Coffin" carries 850 kilograms. The Marines climbing in tomorrow weigh 940. The software will self-correct—in the first five seconds of free-fall, while the pods are still clearing the launch rails. If the ballast is wrong, they'll clip the tube at 200 meters per second. If the cold-gas thrusters are empty—and they are, locked down by a logistics audit—the pods tumble into the bow shock and tear apart. Jesse knows the math. He also knows the depot at Callisto cut corners, the launch rails warp in vacuum, and Admiral Chen signed the order without reading the waiver.

Lieutenant Vane arrived with a slate, a pressed uniform, and the Bureau of Ordnance's assurance that "mathematical models suggest an acceptable injury rate of less than four percent." He's leaving with grease under his fingernails, a forged maintenance manifest, and sixty stolen nitrogen bottles hauled through ventilation shafts. The *Sovereign Dawn* doesn't run on heroics. It runs on torque wrenches, safety wire, and the stubborn refusal of tired mechanics to let bureaucracy kill their people. But the clock is ticking, the launch window is shrinking, and somewhere in Bay One, forty-seven pods still have the wrong center of mass.

This isn't a story about the Marines who fall. It's about the ones who stay behind to make sure the fall doesn't break them. *Calibrating the Iron Coffins* is military science fiction stripped to the rivets—where the enemy is gravity, the weapon is a torque wrench, and the only thing between forty-eight kids and a wet chalk impact is a Chief who refuses to sign the paperwork until the numbers tell the truth.