Garrett “Sack” Harencak is a trusted and tested leader with over 40 years of military and defense contractor experience. He was most recently President of Mission Support and Test Services LLC (MSTS), where Sack provided leadership and management direction for the effective and efficient execution of operations at the Nevada National Security Sites. Prior to joining MSTS in 2022, Harencak was the Vice President of Strategic Defense Programs and Deputy Program Manager of the Missile Defense Agency Integrated Research and Development for Enterprise Solutions contract at Jacobs Engineering. Before joining Jacobs, he served in the U.S. Air Force for more than 39 years and rose to the rank of Major General. Positions he held include; Commander, USAF Recruiting Command, Assistant Chief of Staff, Strategic Deterrence and Nuclear Integration (HAF A10); Commander, Air Force Nuclear Weapons Center, Kirtland Air Force Base; Principal Assistant Deputy Administrator for Military Application, National Nuclear Security Administration, Commander, 509th Bomber Wing, Whiteman Air Force Base, Air Combat Command Deputy Director for Requirements, and Commander, 7th Bomb Wing, Dyess Air Force Base. Harencak holds a BS degree in humanities from the U.S. Air Force Academy, a MS degree in management and communications from Abilene Christian University, and a MS in National Security Studies from the Air War College, Maxwell Air Force Base. Sack serves as a board member for several non-profits and resides in Colorado Springs, CO with his wife Tanya.
Zannis Pappas is a proven and experienced leader with over 41 years of military and defense contractor experience. He was most recently a Business Development Manager for Northrop Grumman (NG) responsible for Nuclear Command, Control, and Communications (NC3) programs. Prior to joining NG, he served as the Deterrence Operations Division Chief (USSF S10) at U.S. Space Force where he established and led all NC3-related procedures for the newest branch of military service. A nuclear missile and space operator, Zannis has led at the operational and strategic levels retiring as a Colonel after over 29 years of service. He continued his career as a Department of Air Force civilian serving at several high-profile positions. During his 15 years at the Pentagon, he was instrumental in the establishment of the Nuclear and Missile Operations career field, the establishment of nuclear policy and successful advocacy of nuclear-related programs. Pappas holds a BS in Earth Science/Geology from the University of Athens, Greece, a BS in Industrial Technology from Southern Illinois University, an MBA in Aviation from Embry Riddle University, a MS in Transportation Management/Air Mobility from the A.F. Institute of Technology, a MA in Military Operational Art/Science from Air Command and Staff College and was a National Defense Fellow at Harvard University. Zannis resides in Fredericksburg, VA with his wife Jackie.
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D’Anne Spence is a senior executive, strategist, and a retired US Air Force Colonel highly experienced in leadership roles across Joint, and Secretariat levels of two federal executive agencies. She is known for recommending the actions that yield the most value within the elements of time, resources, and reputation. With political and diplomatic insight, D’Anne builds bipartisan consensus among industry leaders and senior government officials. Her global perspective, strong business judgment and financial acumen are hallmarks of her career.
In transitioning from the Air Force, D’Anne was Jacob Engineering’s Senior Director of Defense, Intelligence Community, Cyber & Energy Government Relations creating the vision and strategies to manage the company’s Department of Defense (DOD) and Department of Energy (DOE) relationships and influence policy makers to further the interests of the company. She then joined Ankura as Chief of Staff to the CEO and President linking executive leadership and lines of business to make time, information, and decision processes more effective.
In 2022, she retired from the United States Air Force as the Director of the US Air Force Academy’s Washington DC Office. D’Anne represented the Academy to Congress, the DOD, and the Department of the Air Force in all discussions on the $400M annual budget and all matters impacting policy for the 4,000-person cadet wing. Previously, D’Anne worked in the Office of the Secretary of Defense as Special Assistant for Legislative Affairs for Nuclear Weapons, Missile Defense, & Space Policy. She was actively involved in the development and roll out to congress of the President’s Nuclear Posture Review.
In multiple assignments, D’Anne’s diplomatic expertise improved communications and increased collaboration with domestic and foreign counterparts. She was the Military Assistant for the Secretary of Defense for Protocol, Protocol Officer for the Chairman of the Joint Chiefs of Staff and Aide-de-Camp to the Superintendent of the Air Force Academy. During her markedly successful 23-year career, she held leadership and technical roles with increasing scope, and received numerous military service medals.
In recognition of her leadership and professional expertise she serves as a member of the Board of Directors of Warriors Ethos, the Military Benefit Association and is the Chairman of its Executive Compensation Committee. D’Anne is a member of the Board of Regents of the Strategic Deterrence Coalition formed to educate the public and policymakers about the importance of a strong and effective nuclear deterrent for the security of the US and its allies. She is on the Board of Governors of the Army Navy Country Club and serves as Board Secretary.
D'Anne holds a Bachelor of Science in Chemistry from the United States Air Force Academy and a Master of Science in Chemistry from the University of Maryland. She earned a Master of Business Administration from the University of New Mexico and a Master of Military Operational Art and Science from Air University. She has an active Security Clearance. D’Anne has two grown children and lives in the Washington, DC area.
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