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A defense that consists of several sets of weapons that operates at different phases in the trajectory of a ballistic missile. Thus, there could be a first layer (e.g., boost phase) of defense with remaining targets passed on to succeeding layers (e.g., midcourse, terminal).
- Browse Related Terms: A/BPI, API, Battle Space, BDS, BPI, BPI/E, BPL, Bus Deployment Phase, Ground-Based Radar (GBR), HIBEX, IBIS, Layered Defense, Leverage, Midcourse Guidance, PB/MT/D ATD, PBCRAW, PBI, PBP, POTS, Preferential Defense Strategy, Terminal Phase Interceptor