Keystone Defense Network (Ultima)

"If they send to us the fires of war, we will extinguish them at our gates."

-Unknown NISRD Engineer

The Keystone Defense Network is a network of missile defense systems made to protect Nogodrick against a coordinated attack. The system consists of several stages that are meant to intercept missiles in an optimal manner at every distance.

Stages
Stage 1:

Long-range interceptors attempt to destroy the missiles as they enter the terminal phase.

Stage 2:

Faster, more numerous medium-range interceptors repeat the process.

Stage 3:

Short-range interceptors, UAVs, and the first line of laser interceptors fire en masse before the next stages are put into play. The software-scrambler network is also deployed in an attempt to confuse the missiles.

Stage 4:

A network of rapidly-firing point-defense railguns alongside the second line of shorter-ranged but more numerous lasers, saturate the air with fire in an attempt to destroy the missiles. Another line of UAVs may also be deployed. The software-scrambler is expected to be more effective at Stage 4 due to the reduced range between the missiles and the communications pulses.

Stage 5:

Another set of railguns saturate the air with explosions in a final effort to destroy the missiles before detonation. The scrambler is most effective at this distance. If it is estimated that incoming missiles may survive Stage 5, preparations for Stage 6 are made.

Stage 6:

The nuclear-stabilization pulse fires. If this fails, there are no further lines of defense.