Systems modeling and analysis experience in one or more aspects of the missile defense system (e.g., Aegis Weapon System, Ground-based Midcourse Defense (GMD), Glide Phase Intercept (GPI), Hypersonic and Ballistic Tracking Space Sensor (HBTSS), fire control, C2BMC, MDS sensors (EO/IR/RF), kill vehicles, interceptors, countermeasures, etc.). Special Skills Desired: Experience modeling or simulating missile defense applications or related domains (e.g., air combat, air defense, intercept of ballistic targets, intercept of non-ballistic targets, space vehicles, sub-orbital mechanics, etc.).