Since our founding in 1998, over 41,000 students have graduated from S2 Institute courses throughout the world. And over those decades, we have had the opportunity to train a diverse range of students—from private security guards and front-line police officers, to the leaders of Fortune 500 security departments, Generals, and Members of Parliament.
We thank you not only for your patronage, but also for the valuable experience of working together. Every class we present – every student we interact with – is as much an opportunity for us to learn as professionals, as it is our duty to teach.
This page is a tribute dedicated to you, the S2 alumni community, for your accomplishments and support of our programs over the past 24 years. You are the lifeblood of the S2 Institute and your successful careers are the ultimate testimony to our success as a school.
Updates from Our Alumni
If you’re a previous S2 graduate, send us an update and let us know how you’re doing. If you have photos you’d like to share from your training experience at S2, please send them to us. And if you want to be advised of alumni events and special training opportunities, be sure to keep us updated with your current contact information.
"In all of my travels and training, military and civilian, I rarely have the pleasure of encountering such professional instructors and presentations. The knowledge possessed and demonstrated by the instructor staff sets the bar for all civilian training agencies to follow…"
Advanced Training Section, U.S. SOCOM
“The instructor knew all the subjects like the back of his hand…A+++!"
Office of the Secretary of the Air Force, USAF
"The class met all of my expectations and even more."
National Bank of Romania
"I have had a few terrorism / anti-terrorism classes, but none have come close to the intensity and historical background as the S2 course. Your course is what every law enforcement officer should be taking."
U.S. Department of Treasury
"Really excellent. A lot of practical advice that one can use in one's everyday work. Excellent."
"I thought this course was very well done. The topics very relevant and up to date with what is currently going on. This is definitely a "must take" course for anyone dealing with physical security/anti-terrorism matters."
U.S. Army Research Institute of Environmental Medicine
"Very interesting course! The in-depth instruction is very high and the knowledge of the instructor is amazing. I think this course is a must for even people already active in the spectrum."
The Swatch Group
"This course triggered my deepest interests. Craig is a superb instructor due to his experience and appearance as an expert."
Government of the Netherlands
"Very relevant and a must for security professionals in the emerging dynamic services. The program is targeted to address all of the major contemporary security issues globally."
Nigeria LNG Limited
“Great stuff! Presentation was of high standard…I personally give thanks to S2 for the opportunity. Thank You!”
U.S. Customs Anti-Narcotic Unit
Chief, USAF Security Forces Programs & Requirements Branch
“I think this course is really excellent. I have been involved in AT matters for a number of years, however, I found many new and valuable insights.”
IBM Pacific Asia
“I am an intelligence and security professional with 40 years of experience in the field. I am currently the principal Analytical Risk Management instructor for the DoD Joint Counterintelligence Academy and taught the subject for CIA et al for some four years prior…I mention this to emphasize Mr. Gundry's evident expertise in the subject and the fact that old guys like me still have much to learn from others.”
US DoD | Beta Analytics International
“The course is given in a very professional manner. Will highly recommend this course!”
Ministry of Justice, Netherlands
“The class is totally useful and helpful. The instructor is amazing...Perfect. One of the best courses I have ever taken in my professional career.”
American University in Cairo
“Excellent instruction. Very interesting course and professionally presented.”
Walt Disney Corporation
"The instructor was very knowledgeable and experienced. The course was well prepared and presented.”
“This course takes anti-terrorism theory and puts it in a practical perspective. I would rate it very high against the other anti-terrorism training I have had.”
U.S. DOJ, Federal Bureau of Prisons
“The best training I’ve ever had. Extraordinary trainer. Extremely important.”
“I wanted to congratulate and strongly encourage you to continue to raise the bar...my job responsibilities require continuous and active education and training and I must say that your ATO course is one, if not the best I have ever taken.”
Mayo Clinic College of Medicine
“Mr. Gundry is an outstanding instructor who displays a deep understanding of his subject, who keeps the interest of the students and created a solid course”
Central Intelligence Agency
"I thought that the course materials and additional handouts provided with the course were extremely well put together and will be useful long after completing the course. In addition, the instructor was very knowledgeable of AT/FP principles and presented the information in a clear and concise manner. This course was well worth the time and money invested.”
Booz Allen Hamilton
"..helpful for the project I participate in. The instructor was proficient and enthusiastic, with loads of practical experience. Very motivating!"
Netherlands Forensic Institute
“Excellent, comprehensive course. Mr. Gundry is very knowledgeable and is an excellent instructor. I highly recommend this course to other security and AT professionals.”
U.S. Coast Guard