Question:  Integration of the interceptor and the Exoatmospheric Kill Vehicle is performed by a company responsible for what? 
Sentence (from "United States missile defense complex in Poland"): It was intended to contain 10 silo-based interceptors: two-stage versions of the existing three-stage Ground Based Interceptors with Exoatmospheric Kill Vehicles that had a closing speed of about 7 km/s.
Relevant evidence: No