Faculty Director
Dr. Gary Null is the Assistant Department Head for Undergraduate Affairs in the Industrial and Systems Engineering (ISE) Department, and an Assistant Professor of Practice. He has more than 30 years in leadership roles within the government and industry. Before joining the University of Tennessee (UT), his leadership roles included serving as an Engineering Duty Officer in the US Navy (retired), a civilian acquisition program manager and systems engineer in the US Army (retired), and as a senior manager with General Motors prior to UT.
Administrative Director
Trixie Stengle moved to Tennessee from Florida in September 2021 to join the University of Tennessee. In December 2023, she transitioned to the position of Assistant Director for Strategic Initiatives and Pre-College STEM Programs within the Visitors Center under the Office of Undergraduate Admissions. Ms. Stengle is an Army veteran. She was stationed in Fort Riley, Kansas, where she specialized in aviation operations. She brings seven-plus years of higher education experience working in various administrative positions. Before joining the UT family, Ms. Stengle was a Keiser University Financial Aid Officer and VA Certifying official. Ms. Stengle holds a Bachelor of Arts in Business Administration with a concentration in Project Management from Saint Leo University and a Master of Business Administration from Keiser University.
Coordinator
Gabbi Martin joined the Pre-College Programs team in July 2024. She grew up in East Tennessee, where she raised and showed livestock competitively. Gabbi is a third-generation graduate of the University of Tennessee, where she obtained both a Bachelor’s and Master’s of Science in Animal Science in 2022 and 2023, respectively. She formerly served as an extension agent providing agriculture-based education and programming to youth and adults in the community. Gabbi grew up attending various events at the University of Tennessee and is excited to work for her alma mater!