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Faculty and Staff

Lt Col Gary Foster

Lieutenant Colonel Gary L. Foster

Detachment Commander

Chair Professor – Dept of Aerospace Studies

Lt Col Gary Foster is the Commander of Air Force Reserve Officer Training Corps (AFROTC) Detachment 840, and Chairs the Department of Aerospace Studies, Texas State University at San Marcos. In this capacity, he is charged with recruiting, developing, and commissioning the next generation of Air Force leaders.

Lt Col Foster has 724 flight hours aboard the USSTRATCOM Airborne Command Post as an Airborne Launch Control Officer. He has served in several different nuclear assignments at the Wing, NAF, and Combatant Command levels. Finally, Lt Col Foster was the United States Air Force Academy Preparatory School’s Commandant of Cadet Candidates. As the Commandant he was directly responsible for the leadership and mentoring of 234 Cadet Candidates.


Capt Jake DeRuyter

Operations Flight Commander

Assistant Professor – Dept of Aerospace Studies

Captain Jacob DeRuyter commissioned in 2015 through the United States Air Force Academy. Following Intelligence Officer Training, he took up the role of Cyber-Intel Liaison to all 20 of the Air Force’s Cyber Protection Teams (CPTs) located in three remote locations. In this role, he streamlined intelligence support and communication to the teams defending the networks belonging to NORTHCOM, STRATCOM, TRANSCOM, DISA, and the US Air Force. As the Officer in Charge of the Analysis Team, he managed, strengthened, and refined the 67th OSS Cyber Threat Matrix allowing the integration of finished intelligence reporting with potential adversary capabilities on a common threat framework. His efforts led to the addition of over 1500 specific enemy tactics, techniques, and procedures and he spearheaded the implementation of a weapon system overlay that optimized tactical level analysis provided to the CPTs. This gave the teams the ability to perform capabilities based risk assessments in a matter of minutes.

As the Detachment 840 Operations Flight Commander, he is responsible for cadet wing operations to include Leadership Laboratory and physical training which prepare cadets in their pursuit of a commission as Air Force officers. As Assistant Professor of Aerospace Studies, Capt DeRuyter instructs hands-on leadership courses on The Evolutions of USAF Air and Space Power, Ethics and Advanced Leaderships Skills, and National Security Affairs.

Captain Wolff

Capt Colin Wolff

Education and Recruiting Officer

Assistant Professor – Dept of Aerospace Studies

Captain Colin Wolff received commission in 2015 through Air Force Reserve Officer Training Corps at the University of Texas at San Antonio. Following Undergraduate Space Training, he started the role as OIC Mission Management Operator operating the Space Based Infrared System (SBIRS), overseeing the payload management of the $37.4 B Missile Warning system. In this role, he optimized payload configuration for 6 COCOMs while interfacing with multiple Agencies. As Officer in Charge of the Mission Management Cell, he oversaw a team of 7 personnel integrating OPIR throughout various intelligence disciplines. Additionally, he served in the role of OIC Mission Commander, overseeing 11 personnel in support of the 2nd Space Warning Squadrons primary Missile Warning effort. During this time he reported over 5k infrared events, developed multiple Tactics, Techniques, and Procedures used to optimize hi-vis events. Furthermore, he was appointed OIC of Mission Processing Mission Qualification Training, instructing over 1.1k hours weapon system knowledge and performance. Finally, Capt Wolff served as the Deputy Chief of Training, 460th OSS, 460th SW. Lead a team of 27 personnel, executing Mission Qualification Training for the 460th Operations Group. Led instruction for 160 students annually, oversaw first-ever $15 M Standardized Space Trainer upgrade/ expansion, and organized/ executed SST contract transition, providing 33% increased training output.


As the Detachment 840 Education and Recruiting Flight Commander, he is responsible for ensuring all AFROTC educational principles and policies are being met by the cadre and directly manages all recruiting activities that take place on and off campus. Additionally, Capt Wolff instructs hands-on leadership via the 100/200-level courses on leadership, management fundamentals, professional knowledge, Air Force personnel and evaluation systems, leadership ethics, and communication skills required of an Air Force junior officer.

TSgt Ross

TSgt Ashley Ross



Technical Sergeant Ashley M. Ross entered the Air Force from Dallas, Texas and attended Air Force Basic Military Training in December 2010. Upon successful completion of Basic Military Training, at Lackland AFB, Texas and Personnel Apprentice Course at Keesler AFB, Mississippi, TSgt Ross was assigned to Offutt AFB, NE. While at Offutt she served in the 55th Force Support Squadron. Her other assignments are the Air Force Personnel Center at JBSA Randolph AFB TX, and her current is AFROTC Det 840. As Det 840 NCOIC of Personnel, she is responsible for managing personnel records, monitoring updates on all cadet pay actions, and overseeing officer candidates’ life-cycle personnel actions.

SSgt Torres



Ms. Magee

Erin Magee

Administrative Assistant III

Erin moved from Houston, Texas to San Marcos in December 1982. Working in a variety of industries and professions in San Marcos, including ownership of Bowden Road Construction until 1998, she came to work for Texas State University with the goal of working in all capacities for the University serving administration, faculty and students. As the Detachment 840 Administrative Assistant, she is the liaison for AFROTC with the University in securing access and continuity in University classrooms, resources, budgets, scholarship distribution, and management.