Provide a basic understanding and analysis of radiation environments; including the natural orbital trapped particle environments, the natural Interplanetary environment, transient environments (solar events, coronal mass ejection, space weather, etc.), support models for energetic particle environments, and transport of radiation environments including, geomagnetic shielding, and analysis of spacecraft shielding (e.g., FastRAD, Space Radiation). Perform System design support for Single Event Effects (SEE) and Mission Integrated Dose (Total Ionizing Dose (TID) and Displacement Damage Dose (DDD); including development and flow-down of design requirements, analysis of single event effects on system performance, including ad-hoc functional analysis and assessment of system availability.