Faculty and Staff
Lt Colonel Jessica Brown
Chair Professor – Dept of Aerospace Studies
Instructor for AS 400
Detachment Commander
Lt Col Jessica E. Brown graduated from California State University in Long Beach and commissioned through the AFROTC detachment at University of California Los Angeles in 2006 with a BA in US and Modern European History. Lt Col Brown is a Master Combat Systems Officer with more than 2,4000 flight hours in the T-1, U-28A, MC-130H, and T-43 aircraft and over 1,300 combat hours supporting special operations and humanitarian missions.
Lt Col Jason Castleberry
Assistant Professor of Practice – Dept of Aerospace Studies
Instructor for AS 100
Director of Staff
Lt Col Jason A. Castleberry graduated from Louisiana Tech University in 2007 with a BA in Political Science and commissioned through AFROTC Detachment 305. He is a career Logistics Readiness Officer with experience assigned to an Aerial Port, a Logistics Readiness Squadron, Major Command staff, and Combatant Command staff. Prior to his current position, he served as the Deputy Brand Chief, Iran Plans Branch, Logistics Directorate, United States Central Command.
Maj Manuel Garcia
Assistant Professor of Practice – Dept of Aerospace Studies
Instructor for AS 300
Director of Operations
Captain Manuel A. Garcia earned his commission into the United States Air Force through Officer Training School in 2016. He is a career Force Support Officer with experience across multiple organizational levels, from Squadron, Group, Wing, and Field Operating Agency. Prior to commissioning, he was a Liquid Fuels Systems Maintenance craftsman supporting multiple Civil Engineer Squadrons. Prior to his current position, he served as Section Commander for the AFROTC Southwest Region, providing A1 support to 37 G-series order commanders, spanning 11 states and liaising with 18 support installations to assist 245 assigned cadre. His officer assignments include supporting units in the Air Mobility Command, US Air Forces in Europe, and the Air Education and Training Command. Capt Garcia exercised roles as Section Commander, in different organizational levels, Executive Officer, and Sexual Assault Response Coordinator. During his 13 year tenure in the enlisted core, then MSgt Garcia, executed multiple leadership roles as a Civil Engineer craftsman, supporting in-garrison missions at Joint Base Lewis-McChord, Washington, Soto Cano, Honduras, and Spangdahlem Germany. His expeditionary experience includes deployment support at Balad, Iraq; Ali Al Salem, Kuwait; Arba Minch, Ethiopia, and multiple Spanish-driven language support missions.
TSgt James Brown
Assisistant Professor of Practice - Dept of Aerospace Studies
Instructor for AS 200
Officer Accessions Instructor/Enlisted Instructor Evaluation
TSgt James E. Brown entered the Air Force in Sheppard AFB in February 2009. He completed the "Water and Fuels Maintenance Systems" course at Sheppard AFB in August 2009. His background includes various positions as a Utility interior crew lead, Utility Resource and Optimization project manager, and Fuels Service Station technician. Due to his strong interest in public speaking in 2019, Sgt Brown also became a SAPR training instructor for the Wing at Hurlburt Field. Prior to taking on the role of WFSM Ops controller, Sgt Brown served eight months at PSAB as OCNE FP NCOIC and Utility Project Manager liaison
SSgt Luna
SSgt Marcus Luna
Administration
As the Detachment 840 NCOIC of Administration, SSgt Luna is responsible for cadet administrative actions to include cadet pay and travel, Field Training attendance, uniform issue, security and medical clearances, commissioning certifications and Honor Guard liaison. Additionally, SSgt Luna provides valuable NCO perspective to future Air Force officers thru instruction and mentoring during Leadership Laboratory and Aerospace Studies courses.
NCOIC
SSgt Marcus G. Luna entered the Air Force in 2017 and attended Air Force Basic Military Training. Upon successful completion of Basic Military Training at Lackland AFB, Texas and Administrative Apprentice Course at Keesler AFB, Mississippi, SSgt Luna was assigned to Yokota AB, Japan. While at the 374th Airlift Wing he served in various positions such as Military Postal Clerk and Commander’s Support Staff Technician.
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.
Executive Assistant
1.Oct 1998—July 1999—Texas State University, Financial Aid
2.July 1999—July 2006—Texas State Scholarship Athletics—Basketball/Volleyball
3.July 2006—Feb 2008—Texas State University, Dean’s Office—College of Health Professions
4.Feb 2008— Feb 2009—Hays Co Sheriff’s Dept—Dispatcher
5.Feb 2009— Aug 2010—Texas State University—Parking Services
6.Aug 2010—Jan 2014—Texas State University Graduate College—Admissions Processor
7.Jan 2014—Present—Texas State University—AFROTC—Admin Assistant III