Mary C. Stevenson

Transformational senior leader with a distinguished tri-service career across the U.S. Army, U.S. Air Force, and U.S. Space Force—offering an uncommon breadth of operational insight, strategic foresight, and enduring commitment to public service. Ms. Stevenson currently serves as the inaugural Deputy Director of Mission Sustainment in the Office of the Deputy Chief of Space Operations for Operations, Cyber, and Nuclear. As principal advisor to the Director of Space Mission Sustainment (S4), she steers the strategic integration of Air Force enterprise capabilities in Installation and Mission Support, including Logistics, Civil Engineering, and Force Protection across 52 weapon systems and over $66 billion in assets.

A proven architect of organizational resilience, Ms. Stevenson manages and defends $2.35 billion annually in Space Weapon System Sustainment and Installation and Mission Support funding, guiding nearly $10.7 billion across the Future Years Defense Program (FYDP). These efforts directly impact force readiness and the welfare of over 7,000 Guardians, Airmen, civilians, and families. Her leadership has become synonymous with actionable outcomes, strategic transformation, and mission-critical delivery.

Throughout her career in defense logistics and acquisition, Ms. Stevenson has driven systemic reform and accelerated innovation across geographically dispersed organizations, joint environments, and interagency operations. Her diverse service has forged a leadership philosophy grounded in adaptability, mission focus, and enterprise sustainment. She is widely recognized for leading initiatives that enhance space operations sustainment, infrastructure modernization, IT transformation, and supply chain optimization—securing legislative and resourcing wins that sustain operational advantage.

Ms. Stevenson’s career portfolio spans major aerospace platforms and weapon systems, including the A-10, B-52, C-5, C-130, CV-22, E-3, E-8, F-15, F-16, F-22, F-35, KC-135, ICBM, MQ-1, MQ-9, and U-2. Her roles have evolved across operational, programmatic, and strategic levels—from early personnel and contracting analysis at Kelly AFB, to enterprise sustainment leadership at HQ Space Operations Command and the Pentagon. Along this trajectory, she has cultivated high-performing teams, led complex stakeholder engagements, and earned multiple prestigious awards, including the Secretary of Defense PBL Beck Award and the HQ SpOC Directorate Verne Orr Award.