Check out this training from the Federal Law Enforcement Training Center. The cost is free and its virtual.
Here is the description
The Federal Law Enforcement Training Centers (FLETC) invites you to attend the Leadership Series: Active Shooter 360. Lessons learned from the successful response and investigation into the Madden tournament mass shooting and the training roadmap it took to get there. During this presentation, Clay County (FL) Sheriff Michelle Cook and Undersheriff Ronald Lendvay will be discussing various law enforcement areas as they pertain to the crisis readiness and response. The critical areas of discussion will include incident command system, media communications, the Victim Assistance Center, partnerships and jurisdiction, the National Compassion Fund, tactical and incident management, the use of Incident Command System, officer advanced medical training, and pitfalls of over-convergence.
You can visit the training at the below link or by clicking HERE
https://sass.fletc.dhs.gov/fast/plateau_classes/8a661a0f77fb08330178027e64cf5aa4