Guidance system combining inertial navigation (self-contained motion tracking) with GPS (satellite-based positioning) for precise trajectory correction in ballistic missiles.

MIRV (Multiple Independently targetable Reentry Vehicle) is a ballistic missile payload that carries several warheads, each capable of being aimed at separate targets after reentry.

Relating to or using nuclear energy, typically fission, for propulsion or power generation in military vessels.

Propellant consisting of a solid mixture of fuel and oxidizer, enabling long-term storage and immediate launch readiness.

Designation for intercontinental ballistic missiles (ICBMs) deployed and launched from submerged submarines.

Relating to nuclear weapons that derive destructive power from both fission and fusion reactions, typically used in intercontinental ballistic missiles.