
Kevin O’Shaughnessy / Owner & Head Instructor

Kevin’s dad, Michael O’Shaughnessy, former Army captain and Army pistol team lead, was the first to introduce Kevin to the enjoyment of shooting. Many Saturday afternoons were spent at the shooting range learning shooting safety, techniques and accuracy. Many Sunday afternoons were spent around the family dinner table discussing the U.S. Constitution, its meaning and implications for citizens.
Kevin grew to believe that anyone who is interested, willing to learn, and disciplined to practice can learn safe gun handling, the enjoyment of shooting sports, defensive use of firearms, as well as the constitutional implications of firearm ownership.
Instructor Credentials
- NRA certified pistol instructor
- State of Delaware approved CCDW instructor
- Tactical Response Way of the Pistol Training
- Tactical Response The Fight! (Force-on-Force)
- Certificate for NRA Personal Protection In the Home Course
- Advanced concealed carry deadly weapons training by Veritas Training Institute
- Led by retired 30-year Delaware State Police veteran
- Training from Delaware Firearms Training
- Led by former New Castle County police officer
- Advanced concealed carry class through Trinity Tactical
- Successfully completed Advanced Pararescue Jumper Orientation Course (APJOC)
- Delaware security guard license
- Certificate for NRA Personal Protection Outside the Home
- Tactical Response Immediate Action Medical
- Defense Training International (DTI) Urban Rifle with John Farnam
- Warrior Poet EDC Combatives
- Warrior Poet One-Man Room Clearing


Lin Kossak / Social Media & Outreach Director

Lin Kossak-Kurkowski is proud to be a part of the team that makes up Reliance Tactical. As a late teen back in South Jersey, she started off firing shotguns in the woods with a group of experienced tactical friends and has been hooked ever since.
In 2020, Lin met Reliance owner and trainer, Kevin O’Shaughnessy, who quickly became a friend and brother. She began training with Reliance, and has taken every available class.
For Lin, being on the range gives her a sense of confidence, freedom, independence, safety and calm. Every time on the range adds to her education on the foundation, rules, laws, safety, and tactical training. She is passionate about seeing every firearms owner share in that education.
Since 2001, Lin has also maintained her professional career as an account specialist and assisted with property management at DSM Commercial, and she also manages social media for NoWallsChurch. She is also the proud mom of her daughter, London and son, Rocklyn.
Lin's Experience
- Beginner Pistol
- NRA Basics of Pistol Shooting
- Delaware Concealed Carry
- Defensive Rifle
- Advanced Pistol
- Simulator Training
- And countless Saturday sessions in between…