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"I learned so much about arms control and disarmament at ACA! I learned more about arms control here in four months than I had in all three years at my college."

– Alicia Sanders-Zakre
Intern, Fall 2016
December 16, 2016
How a Limited National Missile Defense Would Impact the ABM Treaty

Lisbeth Gronlund and George Lewis

Preliminary Architecture for C-1/C-2/C-3 NMD Systems

  C-1 Configuration1 C-2 Configuration2 C-3 Configuration3
Number of Interceptors Deployed in Alaska 20-100 100 125
Number of Interceptors Deployed in North Dakota 0 0 125
Upgraded Early-Warning Radars Beale (CA); Clear (AK); Cape Cod (MA); Fylingdales (England); Thule (Greenland) Beale; Clear; Cape Cod; Fylingdales; Thule Beale; Clear; Cape Cod; Fylingdales; Thule; South Korea
X-Band Radars Shemya (Aleutians, AK) Shemya; Clear; Fylingdales; Thule Shemya; Beale; Clear; Cape Cod; Fylingdales; Thule; South Korea; Grand Forks (ND); Hawaii
SBIRS-Low? No Yes Yes

Source: U.S. Ballistic Missile Defense Organization

1. C-1 (capability-1) system is defined as defense against a "few, simple" warheads, where "few" referes to five or fewer warheads.

2. C-2 (capability-2) system is defined as defense against a "few, complex" warheads.

3. C-3 (capability-3) system is defined as defense against "many, complex" warheads.