Most of the so-called problems with the B-2 are either so minor as to be operationally insignificant, or are expected occurrences at this stageof a complex weapon system's development and production.
Such systems include all phases of the Phased Adaptive Approach to missile defenses in Europe, the modernization of the Ground-based Midcourse Defense system, and the continued developmentof the two-stage Ground-Based Interceptor as a technological and strategic hedge.