The bill establishes new provisions for the Oklahoma State Bureau of Investigation (OSBI) in response to mass casualty events. It defines a "mass casualty event" as an incident resulting in at least three injured individuals, requiring more emergency resources than typically available, and causing a sudden influx of individuals needing emergency services. The OSBI is authorized to respond to such events without a request from local law enforcement if the event is caused by a violent crime, allowing for better coordination and response during critical situations.

Additionally, the bill creates the Mass Casualty Revolving Fund within the State Treasury, which will be a continuous fund not subject to fiscal year limitations. This fund will consist of all monies received by the OSBI for investigating mass casualty events, including legislative appropriations and federal grants. The OSBI will be able to budget and expend these funds for the purposes outlined in the act, with expenditures made through warrants issued by the State Treasurer. The act is set to take effect on November 1, 2025.