Meet our team.
Amstability delivers professional services tailored to the unique needs of the U.S. government. Led by experienced military and government end-users, the team offers unmatched expertise in supporting mission-critical operations.
Donna Jonas
Chief Executive Officer and Managing Partner
With more than 18 years of experience spanning military, federal, government, and non-profit leadership positions, Donna brings extensive expertise in complex operational oversight, financial administration, and personnel management. Prior to joining Amstability, Donna served as the Chief Operating Officer for the Museum of the Bible, a world-class cultural institution located in Washington, D.C. In this role, she ensured efficient, high-quality, and seamless delivery of services to meet the Museum’s daily operational demands.
A former active-duty U.S. Army Aviation Officer and combat veteran, Donna previously served as a Senior AH-64D Apache aviator, deploying three times with the 3-101st Aviation Regiment in support of combat operations in Iraq and Afghanistan and leading extensive teams supporting complex mission sets. As a civilian, she served as the U.S. Army Senate Liaison Deputy Chief in support of the Office of Chief Legislative Liaison, managing highly sensitive Congressional interface in support of the Department of Defense’s strategic priorities. Donna currently serves as a Lieutenant Colonel in the U.S. Army Reserve and was selected as a National Security Fellow for the Foundation for Defense of Democracies.
Donna holds a Bachelor of Science in French from the University of Missouri and a Master of Policy Management from Georgetown University’s McCourt School of Public Policy, and resides in Northern Virginia with her husband, Andy, and two sons, Grant and Tyler.
Michael-John R. Waite, CIPM II, EPS
Director of Strategy and Relationships
Michael-John R. Waite is a security and risk management executive with extensive experience in global security operations, crisis management, and intelligence analysis. He specializes in counterterrorism, active shooter mitigation, and enterprise security strategy, helping organizations strengthen security teams, mitigate risks, and enhance operational resilience.
Previously, as Director of Crisis & Risk at the Museum of the Bible, he developed a 24/7 Global Command Center, designed executive protection programs, and coordinated security for high-profile individuals, including U.S. government officials and foreign dignitaries.
A recognized industry speaker, he presents on emerging threats, cultural property protection, and crisis preparedness at national and international conferences. He holds a Bachelor’s degree in International Relations & Global Security and is pursuing a Master’s degree. His professional certifications include CIPM II and EPS.
Michael-John serves on the Advisory Board for the International Foundation for Cultural Property Protection (IFCPP) and is the Executive Director of Anchor & Vine Global Outreach, a non-profit focused on international missions and humanitarian aid. Based in Florida, he enjoys fishing, golf, and outdoor activities with his wife, Ashley, and their son, Lincoln.
Sierra Tarkington
Special Advisor to the CEO and Managing Partner
Sierra Tarkington brings a wealth of experience in strategic advisory, operational management, and cultural property protection. As a Special Advisor to the CEO and Managing Partner at Amstability, she ensures effective execution of strategic initiatives, operational efficiency, and alignment with organizational goals. Sierra leverages her background in executive leadership and communication to address complex challenges and maintain focus on critical priorities.
In addition to her advisory role, Sierra is the owner and operator of Threshold Climbing, Fitness & Yoga, Oklahoma’s largest climbing gym. Since 2016, she has successfully managed this 20,000-square-foot facility, leading a team of 30 employees and contractors to provide top-tier services for climbers, fitness enthusiasts, and youth programs.
Sierra holds a Master of Liberal Arts in Museum Studies from Harvard University, where her research focused on cultural property protection in conflict zones. She also earned a B.B.A. in International Business from the University of Central Oklahoma, where she received the Global Competency Award. Her professional expertise spans museum collections management, curatorial leadership, and innovative operational strategies.
Monica Gray
Executive Assistant to the CEO and Managing Partner
With over a decade of experience as an operational manager and C-suite executive assistant, I have developed strong expertise in optimizing operational efficiency and driving strategic initiatives across diverse environments. My career began as a certified dental assistant, but it quickly evolved into impactful leadership and project management roles. Most recently, I served as the Manager of Vendor Relations at the Museum of the Bible, where I effectively managed third-party contractors providing security, facilities management, and food and beverage services. Prior to that, I was the Executive Assistant to both the Chief Operating Officer and Chief Marketing Officer, supporting high-level executives in streamlining operations and enhancing organizational effectiveness.
Beyond my professional career, I have contributed significantly to my church plant, working alongside my husband to oversee training and development for leadership, membership building, scheduling travel, and leading the marriage ministry. These experiences have deepened my commitment to fostering strong vendor and stakeholder relationships, promoting teamwork, and enhancing cross-functional collaboration. Known for my dependability and excellent time management, I navigate complex challenges with a detail-oriented approach and a focus on conflict management.
Outside of work, I am a proud mother of three who loves spending time with family and friends. I enjoy traveling, relaxing with puzzle and word games, and cheering on my favorite football team. I’m excited to connect with others who share a passion for operational excellence and strategic growth!
Connect and collaborate with Amstability.
Whether you’re looking to partner with us as a vendor or need to get in touch, Amstability is here to support your mission. Based in Alexandria, Virginia, we operate across the U.S. and globally, fostering strong relationships to deliver excellence at every level.
