Defensive Shooting Academy

Marshall is a retired Tulsa Police Officer. He dedicated 27 years of his life in the service of others. He has owned and successfully operated Defensive Shooting Academy™ since 2000 and has assembled the finest instructor cadre in the industry. Together they are responsible for curriculum development and currently have 14 courses that are recognized by the Oklahoma Council on Law Enforcement Education and Training (“CLEET”). He is a CLEET certified rifle, shotgun and pistol instructor and has received thousands of hours of training through various organizations and instructors. Over the last two decades DSA™ has trained countless numbers of police officers, military personnel and civilians. Marshall is a life member of the National Rifle Association and a former NRA Law Enforcement Firearms Instructor for pistol and shotgun. He is an accomplished competition shooter in both IDPA and USPSA. He is an NRA Carry Guard Distinguished Graduate and holds an Advanced Certificate from Bill Rogers Shooting School. He is a Master class SSP shooter in IDPA and an A class Production Shooter in USPSA. He has won 5 State Championships, four Regional Championships and loves to train and produce top-notch shooters and teachers. He credits the success of DSA™ to his instructors and lives to serve God and country.

Jeremy has been training with DSA™ since 2007.  He earned his instructor certification with DSA™ in 2010 after demonstrating his devotion and dedication to excellence. He is a reserve Drumright police officer and is on their SWAT team. He studies Sayoc Kali, Jujitsu, hand to hand tactics and trains religiously on his rifle, shotgun and pistol platforms.

Kai has been training with DSA™ since 2009.  He earned his instructor certification with DSA™  in 2012 after demonstrating his professionalism, dedication to excellence, and loyalty. Additional training:

Continual training in several disciplines/arts including ancient and modern weapons/self-defense tools.

Lance has been training with DSA™ since 2007.  He earned his instructor certification with DSA™ in 2010 after demonstrating his devotion and dedication to excellence.

Garrett Grover started shooting early in his childhood as he hunted the mountains where he grew up in the Black Hills of South Dakota. He took these skills into the Marine Corps where he quickly established himself as a marksman earning top honors in shooting during training and at his unit. He was selected to attend the Marine Corps Marksmanship Instructor Course where he earned his certification as a Marine Corps rifle and pistol instructor in 1995. Garrett eventually ended up in the Army National Guard where he graduated from The US Army Sniper School and deployed to Afghanistan as a senior sniper. Garrett also earned his Governor’s Twenty awards in both rifle and pistol and the Gus Hadwigger Award for Excellence in Military Marksmanship in 2010. Garrett also attended the SWAT Academy in 2010 and earned his place on the tactical team for the police dept at which he served. Garrett started shooting competitively upon his return from Afghanistan and quickly established himself as a top national competitor in the sport of 3-Gun. Garrett has many podium finishes at national level multi-gun, long range and single-gun matches to include: 2018 Vortex Extreme-1st , 2019 Vortex Extreme- 2 nd , 2019 3 Gun Nation National Championship-2nd , 2019 USPSA Oklahoma Sectional-Limited Division State Champ, 2021 Tactical Games National Championship-5th , 2019 UML National Championship-9th , 2022 Tactical Games Iowa Regional-2 nd , 2020 Missouri 3-Gun Championship-3rd , 2019 Wisconsin 3-Gun Championship-3rd and many others. Garrett is currently sponsored by some of the biggest names in the shooting industry like: Vortex Optics, Atlas Gunworks, Defensive Shooting Academy, Triggertech, Weber Tactical, Tactical Kinetics, Timber Creek Outdoors and Black Fire Forge. Garrett retired from the Army in 2018 and currently owns Black Fire Forge, a rifle manufacturingcompany and continues to compete nationally.