Law enforcement agencies from across Oklahoma came to Broken Arrow to learn how to train their officers in an active shooter situation. It's training that law enforcement agencies said they hope they'll never have to use.

Instructors said the four-day long course at the Broken Arrow Police and Fire Training Facility is about being prepared for the unknown.

“The three days is the bread and butter of the course; we call it the direct delivery,” Instructor Mark Holley said.

Holley from the LSU National Center for Biomedical Research and Training came to put them into real life active-shooter situations.

“Direct delivery of actually running the students through scenarios,” Holley said.

A training exercise at Oneta Ridge Middle School sent officers searching room to room in a simulated active shooter situation.

“Luckily, we have a great partnership with Broken Arrow Public Schools. Nine different agencies from the state, their instructors are learning, so they can take it back to their agency as well,” Officer Chris Walker said.

Holley said the majority of shootings in the U.S. happen at businesses. 

“A patrol officer will be there because he or she is going to be right in that area, so they are going to be there long before a professional SWAT team shows up,” Holley said.

The free, four-day training wrapped up Thursday.