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.