The navy is developing a prototype for an Electromagnetic Rail Gun. The Rail Gun would be use massive magnetic fields to accelerate a projectile at over 5000 miles per hour. The projectiles would have so much kinetic energy that warheads would become unnecessary components to the projectile. The projectile would be able to devastate a bunker just by making impact with it, making explosives unnecessary. Clearly such a weapon would be extremely useful in a wartime situation.