GENERAL JUSTIFICATION: THE GENERAL JUSTIFICATION FOR THIS GRANT IS TO FURTHER SUPPORT A MISSION CONCEPT EFFORT (PHASE A) INITIATED UNDER SIMPLEX-2015 RISK REDUCTION FUNDING BUT AUGMENTED BY MSSS IR&D TO DEMONSTRATE TO A MISSION CONCEPT REVIEW LEVEL THAT THE MARS MICRO ORBITER MISSION IS A SELECTABLE NASA MISSION AS A MODIFIED CLASS D+ DESIGN AND BUILD TO LOW COST HIGH SCIENCE RETURN MISSION AND EXECUTABLE WITHIN THE TIMEFRAME OF A 2020 LAUNCH OPPORTUNITY. A SPECIFIC JUSTIFICATION IS TO FURTHER ASSESS AND STUDY WITH LAUNCH VEHICLE ORGANIZATIONS WAYS TO ACCOMMODATE THE MMO SPACECRAFT WHILE REDUCING RISK FOR MISSION DEVELOPMENT. COMPLETING THIS AUGMENTATION WORK WILL LEAD TO THE MISSION CONCEPT REVIEW IN ITEM H. OF THE SOW (SEE ABOVE). H. CONDUCT A MISSION CONCEPT REVIEW AT THE END OF THIS INITIAL WORK PHASE AT WHICH WILL BE REPORTED IN THE PRESENTATION PACKAGE THE: I. ARCHITECTURE&SYSTEM CONCEPT II. MISSION CONCEPT III. INSTITUTIONAL CAPABILITIES IV. V&V DRAFT FOR RISK REDUCTION V. SYSTEMS ENGINEERING MANAGEMENT APPROACH VI. DRAFT CONFIGURATION MANAGEMENT APPROACH.