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Grant Whitus

Owner / Team Leader

Sergeant Grant Whitus is a 26-year veteran of a Colorado sheriff’s office.  He served 17 years on SWAT, the last seven as the Team Leader.

Grant is a certified Explosive Breacher and a Colorado POST Certified Instructor for the Law Enforcement Training Academy. He teaches Officer Survival, Building Searches, Rapid and Immediate Deployment (RAID), Single Officer Response (Lone Wolf), SWAT, Responding to In-Progress Calls, Law Enforcement Driving, Precision Immobilization Technique, Building Searches, Close Combat Techniques, Traffic Stops, and Civil Law for the Patrol Officer, as well as many other disciplines.

Grant attended Arapahoe and Red Rocks Community Colleges.

Grant has received 16 Medals, including five Medals for Valor, and is the most decorated employee the a sheriff’s office. In 2002, Grant and his SWAT Team were honored as “Police Officer of the Year”.


Sgt. Grant Whitus

Grant was the Lead SWAT Team member during the Columbine High School shooting. He gave aid to the teacher who was shot and then was the first to enter the library and locate the shooters.  Listen to the true and accurate account of what occurred at Columbine from the person who was actually there. Grant was also the Team Leader during the Bulldozer Incident in Granby, CO.  Additionally, he was the Team Leader who devised and executed the explosive tactical plan for the Hostage Rescue at Platte Canyon High School in September 2006, the only one of its kind.  Most recently, Grant was the Team Leader during an Officer Rescue where over thirty rounds were fired.  The officer was rescued without injury while the suspect was shot by SWAT.



Inside the Classroom – Platte Canyon High School – KMGH 7 News

Whitus was afraid the gunman would either set off the explosives or execute the hostages. “Everyone agreed this was going to happen, so before 4 o’clock we knew (the entry) had to happen,” said Whitus.


Shoot First: Columbine Transformed Police Tactics – Fox News

“Whitus and other SWAT officers tried to wheel Sanders out of the classroom on an office chair. Whitus was holding bandages to Sanders’ wounds when he died.”


The Zero Hour – Law Enforcement Today

“Along with Park County Sheriff’s deputies, the Jefferson County Sheriff command staff, and a former SWAT team leader, Sgt. Grant Whitus, were responsible for the positive outcome that day.”


Philip Baca

Lead Firearms Instructor

Philip was employed as a law enforcement officer for the Jefferson County Sheriffs Office from 2006-2013. He was a tactical operator with the Special Operations Response Team from 2008-2013. While on S.O.R.T. He was SWAT trained, trained by the U.S. Marshals and Secret Service. He was a Kaminsky certified Field Training Officer (FTO) where he trained newly commissioned officers out of the academy. He trained and certified over 20 new recruits. He was also an instructor for Rapid and Immediate Response (RAID), building searches, riot control and he went through the Jefferson County Urban Rifle School. After leaving the sheriffs office he became an NRA firearms instructors in order to train and certify new handgun owners in advanced handgun training. Thus far he has trained over 100 individuals in the NRA Basic Pistol Course, basic handgun handling, malfunction clearing and drawing from a holster.

Joaquin Baca

Master Arrest Control / Defense Instructor

Joaquin earned his B.A., in Kinesiology, from the University of Colorado at Boulder.  While attending college Joaquin was employed as a certified personal trainer.  Joaquin also has earned certification as a level 1 CrossFit trainer.


Joaquin began his martial arts training while in college and earned a black belt in Kung Fu San Soo under Master Brynn Stephens and a black belt in Brazilian Jiu-Jitsu, under Professor J.J. Pugsley who holds a black belt under Professor Dean Lister.


Joaquin has, successfully, competed in several gi and no-gi grappling tournaments and amateur MMA bouts.  He teaches Brazilian Jiu-Jitsu to children and adults and also trains several professional and amateur mixed martial arts fighters. 


Joaquin was employed as a police officer for the city of Lakewood CO for 17 years.  During this time he was a member of the S.W.A.T. tactical team, the traffic team, and was assigned as a patrol officer.


Joaquin is a CO. P.O.S.T. certified instructor and has been an arrest control instructor since 1998.  Joaquin has instructed police recruits and sworn personnel in all areas of arrest control, ground fighting, baton techniques, and defensive tactics.  In addition to being a certified LPD arrest control instructor Joaquin is also a certified FBI defensive tactics instructor, and a was a member of the CO. P.O.S.T. arrest control subject matter expert committee.  Joaquin created the only Law Enforcement Ground Fighting Instructor course that is approved by CO. P.O.S.T.


Joaquin has taught self-defense and arrest control/defensive tactics to numerous municipal, state and federal law enforcement agencies and civilians.


In addition to arrest control instruction, Joaquin also coordinated the recruit academy physical training program and conducted fitness assessments for Lakewood Police Department’s sworn employees.

Sean Joselyn

Special Weapons and Tactics Instructor

Sean Joselyn is a 14 year law enforcement veteran and is currently assigned to the patrol division of a large Sheriff’s Department in Colorado. He is a Sergeant on patrol and the current team leader of a regional Special Weapons and Tactics (SWAT) team.

Sean Joselyn is a 13 year law enforcement veteran and is currently assigned to the patrol division of a large Sheriff’s Department in Colorado. He is a Sergeant on patrol and the current team leader of a regional Special Weapons and Tactics (SWAT) team.

Sean’s experience at the Sheriff’s Department began in the detentions division where he spent two years in operations before transferring to patrol. Sean spent 9 years on patrol before transferring to the training department as the academy coordinator. After two and a half years in the training unit and coordinating 5 academies, Sean was promoted to the rank of Sergeant and transferred back to patrol.

Sean has been a member of the regional SWAT team for over 9 years and held many positions ranging from observer/marksman to entry team. In 2012 Sean was appointed to the team leader position and currently supervises 19 operators, 5 SWAT K9s, and 2 SWAT medics. Sean has completed advanced training in Tactical Gas Deployment, Noise Flash Diversionary Devices, Less Lethal Munitions, Observer/Marksman courses, Urban rifle and pistol, Response to the Active Shooter, Narcotics Buy/Bust Vehicle Assaults/Rescues, Close Quarter Battle Techniques, Tactical Incident Command, and Technical Aspects of Explosive Entries.

Matt Foster

K9 / Explosives Detection and Handling

Matt served 4 years in the United States Marine Corps as Amphibious Assault and an Infantry K9 handler specific to explosives detection. Matt was certified by K2K9 Solutions in Explosives detection using off leash methods with single purpose Labrador Retrievers. Matt then deployed to Helmand Province Afghanistan with 2/7 Weapons company and Task Force Gator to aid in Infantry patrol missions for RC South West. Matt and his K9 partners Mick and Macey, conducted over 300 successful patrols with no reported casualties or deaths. Upon returning from his 9 month tour in Afghanistan Matt then was honorably discharged from the Marines and was able to adopt his IDD (IED Detection Dog) Mick after which they attended a CNCA (California Narcotics Canines Association) certification course and earned their master certification for K9 explosives detection. Matt and Mick continue to do work for local Colorado police agencies as well as train with the Aurora Police Department's K9 Unit in on and off leash tactics to be able to search; planes, boats, cars, trucks, buildings(interior and exterior), open fields, roadways/runways, luggage, and much more. Matt has extensive knowledge in scent detection for explosives as well as training and implementation of working K9's.

Jim Valbert

Patrol Operations Instructor

Jim Valbert is a 27- year veteran of a major metropolitan sheriff’s office in Colorado.  He is currently assigned to the K9 Unit of the Patrol Division where he is the lead K9 trainer.  He is attached to the SWAT team to provide K9 support.  Jim is a POST Certified Instructor for the Law Enforcement Training Academy.  He instructs in the areas of High Risk and Unknown Risk Vehicle Contacts/Stops, Responding to In-Progress Calls, K9 Deployment and Perimeters, Law Enforcement Driving, Precision Immobilization Technique (PIT), Building Searches, and Pedestrian Contacts.  He is a Police K9 Certifying Official for a major K9 association in Colorado.

Jim has a Bachelors Degree in Law Enforcement Administration from Western Illinois University.

Jim has received numerous awards including a Medal for Valor.

Aaron Coorough

Hand-to-Hand Fighting / Defensive Tactics

Deputy Aaron Coorough is a seasoned operator for a Special Operation Response Team (SORT). He is a Field Training Instructor (FTI) and an expert in detention operations.  Deputy Coorough is experienced in the protection and transportation of high profile defendants.


During his time on SORT he has been involved in the security operations for presidential candidates, working directly with the Secret Service.  Deputy Coorough is experienced at operating within secure facilities as well as non-secure areas.  He is fluent in the use of less lethal weaponry and the detaining of violent individuals to minimize disruption of operations.


A former Sergeant and decorated Combat Veteran from the United States Army, Deputy Coorough has been involved in many historic military operations during the Iraq War.  Deputy Coorough has extensive experience in combat operations to include; strategic planning of missions, responding to catastrophic events, and the leadership of troops. Deputy Coorough has received several awards for his actions during combat.


Deputy Coorough is a former collegiate wrestler with a bachelors degree in criminal justice. He is a competitive full contact mixed martial artist.

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